1. Your
contribution to the last project (has been/was) enormous. 2. I (have heard) nothing of
this sort so far. 3. When did you (hear) it? 4. I (spoke) to him at the
conference. 5. It’s what I have always (said). 6. How many times have I (told) you
not to bang the door! 7. Did anyone (ask) for me when I was out? 8. What
did he (say)? 9. Margaret, you (have read) my letters! Don’t deny it! 10. I
don’t know how you (discovered) that I (was) there that night. 11. I (have come)
to you to ask for information. 12. I (have spoken) to her about it many
times. 13. The young man (has torn) the envelope, (opened) it and (took) out a
small sheet of paper. His hands were shaking a little. 14. I have never
(heard) the subject mentioned. 15. No, you can’t have another ice cream.
You (have had) two already. 16. Why, you have not (changed) at all. I (recognized)
you the moment I (saw) you. 17. I (heard) that flowers (grew) better in
shady place. 18. I (have mentioned) the subject once or twice. He (was not )
interested. 19. Oh, he (has explained) everything: he (was out) when you
(phoned). 20. I wonder what (has happened) there since we (left)?