Употребите глаголы, данные в скобках, в past perfect. 1) i was sure that i (see) the man before. 2) i asked him why he (leave) the party so early. 3) it was clear that he (give) us the wrong address. 4) the teacher corrected the exercises which i (prepare). 5) he knew that he (make) a serious mistake. 6) she said she (look) everywhere for the book. 7) i felt that i (meet) the man somewhere before. 8) he wanted to know what (happen) to his briefcase.
2)had left
3)had given
4) had prepared
5) had made
6)had looked
7)had met
8) had happened