Ответ:

ex 1

1. isn't she?

2. can't it?

3. are they?

4. won't you?

5. isn't it?

6. have we?

ex 2

1. aren't we?

2. does he?

3. has it?

4. is it?

ex 3

1. have you?

2. has it?

3. isn't she?

4. are we?

5. won't they?