помогите пожалуйста дам 20 балов!!!​

Ответ:

1. I haven't done this exercise before.

2. Did John repeat this poem yesterday?

3. You have studied at school since the firs form.

4. Michael didn't go to the hospital last month.

5. Has she ever visited Paris ?

6. You have never seen a horse.

7. He has already said that.