The pollution problem here seems to get more and more serious .Something with it .
A. has done
B. must be done
C. is doing
D. was done
The pollution problem here seems to get more and more serious .Something with it .A. has d
答案:5 悬赏:40 手机版
解决时间 2021-12-20 03:32
- 提问者网友：萌卜娃娃
- 2021-12-19 12:46
最佳答案
- 五星知识达人网友：撞了怀
- 2022-01-22 05:29
A. has done(答案→)B. must be doneC. is doingD. was done解析：此题重点考查含有情态动词的被动语态的基本构成和用法。
全部回答
- 1楼网友：鱼芗
- 2022-01-22 06:06
这个问题的回答的对
- 2楼网友：何以畏孤独
- 2022-01-22 05:36
OK啦
- 3楼网友：独行浪子会拥风
- 2022-01-22 04:31
楼主你知道的太多了
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