惨绿少年参考答案：
一、单项选择
1—5: DDDCB 6—10: BCABB
二、 用动词的适当形式填空
1. was built 2. are held 3. is being discussed
4. will be published
5. has not been cleaned 6. was being repaired
三、将下列句子变为被动语态：
1. The room is cleaned (by them) every day.
2. Two books were lost (by him) yesterday.
3. My school uniform was washed by my mother last Sunday.
4. Young trees are watered (by them) every day.
5. The accident would never be forgotten (by people).
6. The computer has been turned on (by her) already.
7. A new bridge is being built (by people) now.
8. The old man is often seen to feed the birds.
