Past Perfect Tense
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.