Ответ:
1.
1. His book will be translated into English by them.
2. Yesterday we were informed about the event by them.
3. My niece is looked after by my grandmother.
4. Accident can be caused by careless drivers.
2.
1. A lot of time have been wasted and the work wasn't done.
2. The homework had been done before the mother came.
3. The delegation will be met at the station.
4. This film is being much speaking now.
3.
1. Many houses are being building in our city.
2. They will help him move to a new apartment.
3. This manuscript was found by accident.
4. I think we can show him the gift.
5. A letter has just been written.
Объяснение:
возможны ошибки!