Many trees have been planted by her on the hill.
2.Badminton is being played by them on the playground.
3.Were letters written to his mother by the boy?
4.Some pictures were put up (by us) on the wall yesterday.
5.When will the paintings be drawn by them?
6.There homework can't be handed in in time.
7.Subjects must be learned carefully.
8.Who is often taken care of by her?
9.Some delicious food is going to be cooked for us by mother.
10.English songs is being listened to by her in the classroom.