1. The bridge __________ by the farmers themselves in 1982.
A. built
B. was built
C. build
D. was build
2. All the books will _______ to the children who live in the small village.
A. be sent
B. sent
C. be send
D. send
3. Keys _______ used for ______ the doors.
A. is, opening
B. is, opened
C. are, opening
D. are opened