1. The document contains a student book answer key and provides answers to exercises in the book. 2. It includes vocabulary, language focus exercises, reading comprehension questions and answers, and real world examples related to different units on topics like hobbies, jobs, rules and regulations. 3. The answer key provides sample conversations, model responses to questions, and explanations to help students check their work and understanding.

1. 384
Student Book 3 Answer Key
Unit 1
Page 4
Preview
Suzy: hard-working, serious
Keri: easygoing, talkative
Eric: dependable, kind
Hiroko: funny, outgoing
2. languages
3. music
4. action figures
5. photography
C
2. Suzy 3. Eric 4. Gilberto
Page 6
Language Focus
1. who likes to play sports
2. who has blond hair and wears glasses
3. who does martial arts
4. who is/who’s funny and talkative
2. Gilberto’s the one who studies a lot.
3. Lili’s the one who’s wearing a red dress today.
4. Ming’s the one who’s pretty good at tennis.
5. Keri and Suzy are the ones who like to help
the teacher.
6. Eric’s the one who collects Japanese action
figures.
7. Eun-Sook’s the one who plays the piano and
the violin.
8. Luis is the one who speaks Portuguese and
Spanish.
Page 7
Answers will vary.
Pronunciation
1. glide 3. step 5. step
2. step 4. glide 6. glide
Do you know? a. extroverts
Page 8
Reading
b. students
talkative, extroverted, quiet, shy, friendly,
easygoing, active, sporty, good sense of humor,
funny, honest, fake, serious, outgoing
Page 10
Comprehension
1. c 2. a 3. a 4. a 5. c
Answers will vary.
Do you know? c. hard-working and dependable
Page 11
The Real World
Lang Lang (pianist) R
Tom Cruise (actor) L
Avril Lavigne (rock musician) R
Angelina Jolie (actress) L
Monica Seles (tennis player) L
Zac Efron (actor) R
Michael Jordan (basketball player) R
Idiom a. Can you help me?
Unit 2
Page 13
Preview
1. chef 5. designer
2. reporter 6. accountant
3. nurse 7. flight attendant
4. doctor 8. police officer
2. lets you help people nurse
3. is creative chef
4. lets you work outside police officer
5. is challenging doctor
A
B
B
C
B
A
A
B
D
A
B
A

2. 385
6. pays a lot of money accountant
7. lets you meet people reporter
8. is artistic designer
Page 14
Language Focus
2. that lets you work with animals.
3. that lets them be creative.
4. that lets us meet interesting people.
5. that lets him work with children.
6. that lets me help people.
1. that 5. that
2. with 6. as
3. with 7. be/do
4. be 8. as
Do you know? b. teachers
Page 15
Pronunciation
2. Laura, funny, kind
3. chef, works, restaurant
4. Ming, job, pays, lot, money
5. They, jobs, challenging
6. accountant, good, numbers
Page 16
Reading
oceanographer, extreme photographer, astronaut
Answers will vary.
Page 18
Comprehension
1. b 2. a 3. b 4. a 5. c
Answers may vary.
Do you know? c. Yuri Gagarin
Page 19
The Real World
Answers will vary.
Idiom a. continue to work hard
Unit 3
Page 20
Preview
a. 4 b. 2 c. 3 d. 1 e. 5
1. movie theater 4. library
2. museum 5. temple
3. bus
Answers will vary.
Page 22
Language Focus
2. can’t use 7. can’t
3. can, listen 8. have to raise
4. can 9. Do, have to clean
5. have to eat 10. don’t
6. can, eat
2. You can’t walk on the grass.
3. You have to stay on the path.
4. You can’t play loud music.
5. You can’t feed the animals.
6. You have to recycle your water bottles.
Page 23
Answers will vary.
Pronunciation
1. has to 4. has to
2. have to help 5. have to study
3. have to 6. have to
Do you know? c. Hungary
Page 25
Reading
hair, men, rain forest, outside, girl
Line 4, so teenage Huli boys have to grow great
hair
Line 11-12, When boys are eight years old, they
B
C
A
A
B
C
D
B
B
A
B
B
C
B
B
A
B

3. 386
have to leave their mothers to live with their fathers.
Line 18-20, 1. They cannot run, because their
hair can be damaged. 2. They have to stay away
from fire. 3. They have to put water on their hair
12 times a day to make it grow faster.
Page 26
Comprehension
1. b 3. a 5. b
2. c 4. c 6. a
6 2
3 4
5 1
Writing
Answers will vary.
Do you know? a. 15 cm
Page 27
The Real World
R F
F R
R R
R F
Idiom b. break the rules
World Explorer
Page 29
Notes about New Zealand
1. Auckland
2. bungee jump
3. Kiwis
4. Rotorua
5. Maori
6. sheep
Unit 4
Page 32
Preview
Answers will vary. Sample answers:
Sloths: slow, careful, quiet, patient
Bees: hard-working, quick
Owls: quiet, patient, quick
Dolphins: graceful, playful, quick
B
Sloth move slowly and carefully.
Bees work hard and quickly.
Owls wait patiently and quietly for their food.
Dolphins swim gracefully. They jump playfully out
of the water.
1. c 2. d 3. b 4. a
Page 34
Language Focus
2. loudly, loud
3. quickly, quick
4. fierce, fiercely
5. bad, well
6. badly, good
1. hard 4. carefully
2. patiently 5. well
3. fast
Page 35
Answers will vary.
Pronunciation
1. A: How did Stig play at the soccer game?
B: He played well and ran fast with the ball.
2. A: Is Ming going to help me do homework
today?
B: No, he’s helping Bob quickly finish his
project for the science fair.
Do you know? a. monkey
Page 36
Reading
1. chimpanzee 3. crocodile
2. fox 4. elephant
2. roughly 5. silently
3. gently 6. carefully
4. curiously 7. quickly
A
A
C
B
C
D
B
A
B
A
B

4. 387
Page 38
Comprehension
1. b 2. c 3. a 4. b 5. c
b. E e. C
c. E f. E
d. C h. C
Do you know? c. lion
Writing
Answers will vary.
Page 39
The Real World
as gentle as a lamb
as graceful as a swan
as playful as a kitten
as quiet as a mouse
as busy as a bee
as fierce as a lion
1. as busy as a bee
2. as graceful as a swan
3. as playful as a kitten
4. as quiet as a mouse
5. as fierce as a lion
6. as gentle as a lamb
Idiom b. cats and dogs
Unit 5
Page 40
Preview
Freshwater levels will fall.
Deserts will expand.
Food supplies will decrease.
Temperatures will rise.
Farmland will shrink.
The number of wildfires will increase.
Become larger: increase, expand
Become smaller: fall, decrease, shrink
2. Drinking water supplies will decrease.
4. Land will become drier.
5. Animals and plants will die.
Page 42
Language Focus
Answers may vary.
1. less 4. more
2. fewer 5. fewer
3. More 6. less
1. will die 5. will get worse
2. will be 6. will have
3. will decrease 7. won’t be
4. will be like 8. ’ll get sick
Page 43
Answers will vary.
Pronunciation
1. are 4. is
2. There will be 5. will
3. I think, will get 6. think, is very
Do you know? b. bald eagle
Page 44
Reading
ice floes = large pieces of floating ice (L. 16)
carcasses = dead bear, dead bodies (L. 20-21)
disappear = becoming extinct (L. 25)
In the future, polar ice will continue to shrink and
endanger the bears. Some scientists believe 65
percent of the world’s polar bears will disappear by
2050. (L. 22-24)
Page 46
Comprehension
1. c 2. c 3. a 4. b 5. c
2. b 3. f 4. e 5. a 6. d
Do you know? c. 76 cm
Page 47
A
B
C
D
A
B
A
B
B
C
B
A
B
A
B

5. 388
The Real World
Answers will vary.
Idiom c. he’s easygoing and honest
Unit 6
Page 48
Preview
1. c 2. a 3. d 4. f 5. e 6. b
2. riding my bike
3. visiting my grandparents
4. playing volleyball
5. hiking
6. eating dinner
Page 50
Language Focus
2. taking pictures of the volcano
3. sleeping
4. studying in the library
5. skateboarding outside
6. traveling with her family
1. was sleeping
2. hit
3. was looking
4. struck
5. started
6. were celebrating
Page 51
Pronunciation
1. a 2. a 3. a 4. b
Do you know? b. typhoon
Page 52
Reading
a. Junko Tabei did something surprising.
Answers will vary.
Page 54
Comprehension
1. b 2. a 3. c 4. a 5. b
1. no time to escape
2. extreme pain
3. on her hands and knees
4. reached the summit
5. half finished
6. historic Everest climb
Do you know? c. Edmund Hillary
Page 55
The Real World
1. stay close to the ground, stay away from
water, call for help on your cell phone
2. listen to a battery-powered radio, use a cell
phone
3. stop the car and stay inside, keep the
windows closed
Idiom c. she angrily left the room
World Explorer
Page 57
Notes about Southern Africa
1. looking for
2. scared of
3. biggest, South Africa
4. fewer, can’t, slower
Unit 7
Page 62
Preview
a. discovered
b. became
c. won
e. introduced
f. invented
g. died
h. traveled
Exploration a, h
Technology e, f
Sports c, d
Entertainment b, g
A
B
C
B
A
B
A
B
A
A
B
B

6. 389
Page 64
Language Focus
2. period of time
3. period of time
4. point of time
5. period of time
6. point of time
1. in 5. from
2. in/during 6. to
3. ago 7. in
4. in 8. in
Do you know? b. 7
Page 65
Answers will vary.
Pronunciation
1. September 16, 2000
2. October 17, 1972
3. April 23, 1616
4. September 12, 2005
5. July 21, 1969
6. October 12,1492
Page 66
Reading
3 Who lived in Machu Picchu?
3 What is the city like today?
Answers will vary.
Page 68
Comprehension
1. a 2. b 3. c 4. b 5. b
a. 5 e. 2
b. 3 g. 8
c. 7 h. 4
d. 6
Do you know? c. 2,500
Page 69
The Real World
2. j 5. d 8. h
3. c 6. a 9. g
4. i 7. e 10. f
Idiom c. we have the same problem
Unit 8
Page 70
Preview
1. danced 4. baked
2. eaten 5. given
3. worn 6. gotten
Moon Festival 2
Mother’s Day 5
Carnaval 1
birthday 6
Valentine’s Day 4
Halloween 3
Page 72
Language Focus
2. Has Susan ever eaten Spanish food? No, she
hasn’t.
3. Have her parents ever given her an MP3
player? Yes, they have.
4. Have you ever been/gone to a New Year’s
parade? No, I haven’t.
5. Have they ever sung karaoke? No, they
haven’t.
1. Have, been
2. Have, taken
3. ’ve/have, taken
4. has
1. Have, been
2. Have, worn
3. ’ve worn / have worn
4. Have, done
5. haven’t
B
C
D
B
A
B
A
B
A
B
B
C
1
2

7. 390
6. has
Do you know? b. 1971
Page 73
Answers will vary.
Pronunciation
1. forgotten 4. given
2. taken 5. eaten
3. gotten 6. written
Page 74
Reading
b. students
outdoor cafés, concert stages, and beautiful
sculptures (L. 3-4)
amazing sculptures (L. 8)
During the day, the sculptures shine in the winter
sun. At night, colorful lights shine on them.
(L. 9-10)
They were interesting (L. 15)
People really like the sculptures (L. 16)
These sculptures were amazing (L. 20)
Page 76
Comprehension
1. c 2. a 3 c 4. b 5. c
1. (Sapporo) Japan
2. Millions
3. 1950
4. one day
5. high school
6. soldiers
7. seven
8. snow, ice
Do you know? c. 38 cm
Page 77
The Real World
Idiom a. she was very scared
Unit 9
Page 79
Preview
Before Now
Yuki in a village apartment
Roberto in the suburbs apartment
Alex in the country house
Carrie in the city farmhouse
Shilpa in a town apartment
Page 80
Language Focus
2. She used to live in the city.
3. She didn’t use to stay home during the
summer.
4. She used to travel a lot with her family.
5. She didn’t use to babysit her neighbors’ kids.
6. She used to be a DJ at a teen club.
7. She didn’t use to study at the library every
weekend.
8. She used to go to the movies every weekend.
1. didn’t, use to live
2. used to have
3. don’t (have it) anymore
4. used to hang out
5. Did, use to go
6. didn’t use to hang out
7. used to meet
8. used to be
9. goes, anymore
Page 81
Answers will vary.
Pronunciation
1. used to work
2. use to do
3. used to go
4. used to live
5. use to like
6. use to hang out
D
B
A
B
A
B
A
B
C
D
B

8. 391
Do you know? b. does not have any people living
there anymore
Page 82
Reading
Answers will vary.
There was a deafening noise, and the city of
Pompeii started to shake. In the crowded market,
shoppers screamed and pointed at Mount Vesuvius,
the huge volcano near the city. Ash and smoke
were shooting 30 kilometers into the sky from the
volcano. (L. 1-4)
Some people took money and jewelry and ran for
their lives. (L. 11-12)
Page 84
Comprehension
1. b 2. a 3. a 4. c 5. b
August 24, midday 2, 4, 6, 7
August 24, midnight 5
August 25, morning 3
Do you know? a. Indonesia
Page 85
The Real World
Idiom c. I’m comfortable here
World Explorer
Page 87
Notes about Angkor
1. f 2. d 3 e 4. b 5. a 6. c
Unit 10
Page 90
Preview
4 body
3 skeleton
5 fossil
1 bones
2 footprint
1. found the bones
2 discovered the footprints
3. identified the skeleton
4. discovered the body
5. found the fossil
Page 92
Language Focus
2. 1
3. 2
4. 2
5. 1
6. 2
2. didn’t do
3. found
4. was
5. have learned
6. (have) discovered
7. didn’t study
Do you know? a. plants
Page 93
Answers will vary.
Pronunciation
1. skeleton 4. temperature
2. crocodile 5. mammoth
3. energy 6. history
Page 94
Reading
c. Dinosaurs in the Movies
bones, teeth (L.13)
skin, soft tissue (L.16)
skin (L.17)
feathers, tail (L.19)
skeleton, skin (L. 21)
Page 96
Comprehension
1. b 2. a 3. a 4. b 5. c
A
B
A
B
A
B
B
C
D
B
A
B
A

9. 392
1. paleontologist
2. Experts
3. planet
4. research
5. pattern
6. roar
Do you know? c. terrible lizard
Page 97
The Real World
Idiom b. difficult to understand
Unit 11
Page 98
Preview
1. participate in 5. donate
2. hold 6. clean up
3. volunteer 7. ask for
4. take care of 8. hand out
a. 5 b. 4 d. 2 e. 3
a. 3 b. 2 c. 1 d. 4
Page 100
Language Focus
2. clean up
3. set up
4. takes care of
5. participate in
6. ask for
7. help out
8. find out about, hand out
1. It’ll be a success if more people help out. / If
more people help out, it’ll be a success.
2. it won’t be any fun if no one participates. / If no
one participates, it won’t be any fun.
3. If people want to enjoy the show, they’ll need a
babysitter.
4. If kids come to the babysitting center, they
can play fun games.
5. If there are a lot of kids, will it be too noisy? /
Will it be too noisy if there are a lot of kids?
6. If you make your famous chocolate cookies,
I’ll buy them all.
Page 101
Answers will vary.
Pronunciation
1. 3 2. 2 3. 3 4. 2 5. 2 6. 3
Do you know? b. $30 billion
Page 102
Reading
a. Who is the girl on the magazine cover?
c. Why do these children need help?
d. Why are some children homeless?
Her name is Sharbat Gula. (L. 8)
there were many street girls who did not have
parents and were homeless. (L. 18)
Life is still hard, and many schools still do not
have basic materials, like textbooks. (L. 26-27)
Page 104
Comprehension
1. c 2. b 3. c 4. b 5. a
B
A
B
1
2
B
C
D
B
A
B
A
B

10. 393
Do you know? b. taekwondo
Page 105
The Real World
Idiom b. study hard for a test
Unit 12
Page 106
Preview
2. sun 6. moon
3. planets 7. Venus
4. solar system 8. Mars
5. orbits
1. 200 billion 4. 365
2. 8 5. 385,000
3. 3rd 6. 27
Page 108
Language Focus: Review
1. is, lasts
2. were looking, discovered
3. used to eat, can eat
4. are going to build, will use
5. used to have, decided, isn’t
2. is the Mars Rover studying (on Mars)?
3. is a NASA spacecraft going to orbit Mercury?
4. are scientists learning about (on) Venus?
5. will the New Horizons spacecraft do if it
reaches Pluto in 2015?
6. astronauts visiting Jupiter in the near future?
1. landed 6. has traveled
2. have learned 7. are planning
3. have, been 8. want
4. went 9. go
5. were studying 10. will learn
Page 109
Answers will vary.
Pronunciation
1 . T he ays tronaut slowly eyn tered the spacecraft.
2 . T hree ays tronauts recently returned to Ewa rth.
3 . S cientists didn’t know awb out Pluto uwn til 1930.
4. Mercury and Venus are in the inner solar
y y
system.
5 . I n 1969, two wA mericans landed on the moon in
A pollo 1y 1.
6 . A stronauts do wa lot of training before they go
iwn to space.
Do you know? b. Venus
Page 110
Reading
3, 2, 1
Answers will vary.
Page 112
Comprehension
1. b 2. a 3. b 4. c 5. c
1. For 5. Against
2. Against 6. Against
3. For 7. For
4. Against
Do you know? c. 437 days
Page 113
The Real World
Across
2. Pluto
5. astronaut
6. Mars
10. star
11. Mercury
Down
1. Jupiter
3. galaxy
4. asteroid
6. Moon
7. solar system
8. Venus
9. craters
A
B
A
B
C
D
B
A
B
A
B

11. 394
Idiom b. I’m tired and I can’t concentrate
Page 115
Notes about Mars
1. water
2. 225 million, - 63
3. small, 50
4. rivers, higher/warmer
5. factories, rise/increase, plant
6. oxygen