1.The questions were discussed by us at the meeting.
2.Such exercises are often done by the students in class.
3.The museum will be built by them next year.
4.A lot of tall house had been put up by us in the town in the last few years.
5.The book must be handed in tomorrow.
6.The sweater was bought by her./ I was bought a sweater by her.
7.He was made to tell them everything.
8.A new bridge is being built by them.
9.Will the homework be finished by them tomorrow?
10.Can it be finished in two hours?
11.The children were taken good care of by them.
12.He was seen coming out of the room by me.