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问题: 单选

After __ by the doctor, Hank had to stay indoors.

A examined B. being examined

说出理由 谢谢

解答:

after这里是介词,+doing/being done
所以选B.
连词需要接句子。after/before/since/until既可作连词也可作介词。和when/while等不同。
When(he is) asked why he is late,he always answers the same.
这可以省略主语和be.