Ответ:

1 Are you / doing / a test ? Yes, I am.

2 Is your teacher / sleeping ? No, he isn't.

3 Are your friends / studying ? Yes, they are.

4 Is it / raining / today ? No, it isn't.

5 Are your classmares / singing ? No, they aren't.

6 Is your dad / working ? Yes, he is.

Объяснение: