It is uncertain __side effect the medicine will bring about,although about two thousand patients
题目
It is uncertain __side effect the medicine will bring about,although about two thousand patients
have taken it .这道题答案是WHAT,我想问为什么不能用WHETHER ,求详解
答案
如果是用whether,句子就必须改写了：
It is uncertain WHETHER the medicine will bring about ANY side effect.
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