Answer:
1. the bananas was bought at a low price by him
2.all the books have been sold by us
3.my homework is helped by the teacher
4.this portrait was painted by a famous artist
5.his test hasn't been finished by him
6.this poem was written by Cyd
7.a mouse was caught in a mouse trap by them
8.good food is served in the restaurant by them
9.basketball is played in my country
10.telephone (?) was invented by him on 1876
Explanation:
apply the passive formula
