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There is some doubt he will pass the exam. [ ] A. ifB. why C. thatD. how

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There is some doubt he will pass the exam. [ ] A. ifB. why C. thatD. how

There is some doubt________ he will pass the exam.

[]

A. ifB. whyC. thatD. how

试题答案

答案:A

提示:

doubt用于肯定式用if/whether引导,用于否定式用that引导.