1.came_ had finished

2.went_had read

3.had started

4.listened_had done

5.went_had gone

6.went_had finished

7.went

8.had already begun

9.watched_had done

10.had gone_went  

11.prepared_went

12.had washed_kept

III.1.is typically caused

2. was destroyed

3.have been rebuilt

4.will be installed

5.is killed

6.was striken

7.have already evacuated

8.will be hitted

9.are repaired

10.is used

IV.1.Letters are typed by mary 2. you will be helped by his father tomorrow 3.human life has been changed by___ 4.This bottle was broken by Peter 5.English are being learnt in the room