{01It is uncertain ___ side effects these weight-loss drugs will bring about, although hundreds of thousands of patients have taken it.
A.that
B.whether
C.how
D.what
解析:考查主语从句的连接词。本题的it是形式主语。真正的主语是后面的从句,因为side effects是名词短语,所以使用what进行强调。结合句意可知D正确。句意:尽管很多病人已经服用它了,但这种减肥药会有什么样的副作用还不确定。 本题选D。 {02}Leave your key with your neighbor you lock yourself out one day.
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