Ответ:

1) Wasn't he?

2) Aren't they?

3) can she?

4) haven't you?

5) weren't they?

6) is he?

7) could you?

8) are you?

9) can't she?

10) is he?

11) were they?

12) has she?

13) couldn't you?

14) was she?

15) can she?

16) were they?

17) haven't we?

18) aren't we?

19) is he?

20) could she?