1) I lost the key that he (give) to me.

2) She told me that she (see) a ghost.

3) I went downstairs because I (hear) a noise.

4) When they came home, Sue (cook) dinner already.

5) We could not send you a postcard because we (forget) our address book.

6) you (finish) your homework before you went to the cinema?

7) The waiter served something that we (not / order).

8) He went to Alaska where he (not / be) before.

9) you (have) breakfast before you came here?

10) His mother was angry because he (not / help) her with the shopping.