It is uncertain _______ side effect the medicine will bring about,although about two thousand patien...
2022-10-05 14:40:56 43次 福建省2016-2017学年高一下学期期中考试英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
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
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