This document contains 20 words with definitions or examples of their usage including formal, whistle, label, puzzle, legal, angle, normal, needle, angel, pupil, struggle, level, local, bicycle, channel, global, stumble, quarrel, article, and fossil. It provides short one or two sentence explanations or examples for each word to concisely illustrate its meaning.

2. 1. formal: He sent me a formal
letter.

3. 2. whistle: I whistle when I´m
happy.

4. 3. label: Look on the label.

5. 4. puzzle: This puzzle has 500
pieces.

6. 5. legal: The legal voting age is
18.

7. 6. angle: A right angle has 90
degrees.

8. 7. normal: Hot weather is
normal in July.

9. 8. needle: The needle was
very sharp.

10. 9. angel: The angel in the play
wears a halo.

11. 10. pupil: Is he a pupil at your
school?

12. 11. struggle: I struggle with
math work.

13. 12. level: Pitch a tent on level
ground.

14. 13. local: I often use our local
library.

15. 14. bicycle: My bicycle had a
flat.

16. 15. channel: Mary swam
across the channel.

17. 16. global: Scientists study
global warming.

18. 17. stumble: I often stumble
on this step.

19. 18. quarrel: My sister and I
quarrel.

20. 19. article: Did you read the
article?

21. 20. fossil: The dinosaur fossil
was old.