题目内容
It is uncertain _______ side effect the medicine will bring about,although about two thousand patients have taken it.
A. that B. what C.how D.whether
【答案】
B
【解析】 略
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题目内容
It is uncertain _______ side effect the medicine will bring about,although about two thousand patients have taken it.
A. that B. what C.how D.whether
B
【解析】 略