问题描述：
She __ better than to trust in him.
(A) should have known
(B) shouldn't known
(c) will have known
(D) should know
请问选哪个,
D为什么不对？
(A) should have known
(B) shouldn't known
(c) will have known
(D) should know
请问选哪个,
D为什么不对？
问题解答：
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