6. We use which to ask about choice.
We answer with one or ones. One singular; Ones plural
Which coat do
you need?
Which pants
does he want?
The brown one.
The gray ones.
7. We use why to ask about reasons.
We answer these questions with because.
Why do you like
this sweater?
Why does your
friend like those
sneakers?
Because it is
new.
Because they are
cheap.
8. To form Wh- questions, use: Wh- word + do or does +
a subject +the base form verb.