at which 显然是不可以的
which 表示地或物
不是时间
when才是表示时间的
-How long did the meeting last this afternoon?
-How long did the meeting last this afternoon?
- How long did the meeting last this afternoon
- It was supper time ______the meeting was over.
答案是when 为什么at which不行?
- How long did the meeting last this afternoon
- It was supper time ______the meeting was over.
答案是when 为什么at which不行?
英语人气：160 ℃时间：2019-08-28 02:14:47
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