Употребите глаголы, данные в скобках, в present , past, future perfect: 1) he (make) that same mistake several times. 2) i (hear) that story before. 3) it was clear that he (give) us the address. 4) the teacher corrected the exercises which i (prepare). 5) he says that before he leaves he (see) every show in town.

1) He has made that same mistake several times.
2) I have heard that story before.
3) It was clear that he had given us the address. 
4) The teacher corrected the exercises which I had prepared. 
5) He says that before he leaves he will have seen every show in town.