题目内容

I hadn' t told him these details, So he______some research on his own.

A.should do
B.needn’t have done
C.must have done
D.mustn't have done

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A. 草本植物
B. 茎方形
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D. 轮伞花序
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A.is going to
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A. 半夏
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C. 贝母
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The food _______ we ate in the dining hall is very delicious.

A.where
B.which
C.who