_____several times about it,but he could not give the correct answer.A.Being asked B.Having been asked C.He would ask D.He had been asked选什么?

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_____several times about it,but he could not give the correct answer.A.Being asked B.Having been asked C.He would ask D.He had been asked选什么?

_____several times about it,but he could not give the correct answer.A.Being asked B.Having been asked C.He would ask D.He had been asked选什么?
_____several times about it,but he could not give the correct answer.
A.Being asked B.Having been asked C.He would ask D.He had been asked
选什么?

_____several times about it,but he could not give the correct answer.A.Being asked B.Having been asked C.He would ask D.He had been asked选什么?
选D.
首先根据逗号后有连接词but,那么前面半句和后面半句是两个完整的句子,所以排除A和B;
然后是根据后半句的句意,他还是不能给出正确的回答,所以前面应该是他被问了好几次了,是个被动,所以选择D.

选D
but 表示两个句子是转折关系
前一个句子必须有主语, 所以只能从CD里考虑
意思是他已经被问过这个问题好几次了,但他还是得不到正确答案
所以选D

D
因为这个句子已经有了连词but 了,所以不是非谓语的范畴了,只要在but 之前用一个完整的句子就行了
意思是虽然他已经被要求问了好几回,但是,他还是不能给出正确的回答
要是没有连词but ,选B

B,他是被问,所以用被动。several times ,用完成时。