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
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