11. These plants have never been watered. (S + have/has + been + Vpp + by O)
12. When I entered the room, The test instructions were being passed out by the teacher. (S + were/was + being + Vpp + by O
13. People at hospital are treated and cured. (S + is/are/am + Vpp + by O)
14. He hasn't been seen since last week.
15. He is said to be a great footballer. (S + động từ tường thuật + that+ clause -> S+ (be)+ said+ to-V)
16. She was told that her purse was found by the police.
