Ответ:

Exercise 19.

1. B: I'm going

2. A: Is Ann talking

B: is doing

3. A: do you go

4. A: are studying

B: want

5. A: are going

B: are you going?

6. A: does it take

Exercise 20.

2. am

3. are having

4. am lying

5. is playing

6. is watching

7. is swimming

8. get up

9. spend

10. are going

11. are taking

12. want