1. (buy) you ever a piano?

2. (buy) when you the piano?

3. (be) you ever in London?

4. (be) When you in london?

5. (speak) you ever to a pilot?

6. (speak) When you to the pilot?

7. (see) you ever the film

8. (see) When you the film?

9. (meet) you ever Mr Carter

10. (meet) When you him?

Ответы:

1/ have you ever bought

2 when did you buy the 

3 have you ever been TO London/там исправь на to

4 when were you 

5 have you ever spoken

6 when did you speak 

7 have you ever seen the film

8 when did you see the film

9 have you ever met Mr Carter

10 when did you meet him