【題目】The math problem is so hard. I really don’t know .

A.how to do itB.how to doC.what to do itD.where to do it

【答案】A

【解析】

考查賓語從句。句意:這道數(shù)學題太難了。我真的不知道怎么做這道題。how怎樣;what什么;where哪里。根據(jù)句意排除CD;how是疑問副詞,不可作do的賓語,后面應加賓語it,為how to do it;而what是疑問代詞,可以直接作do的賓語,故為what to do。故選A。

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