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Do you doubt we will defeat Class Two in this basketball mat

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Do you doubt we will defeat Class Two in this basketball match?
A.if\x05B.whether\x05C.that\x05D.which
为什么选C,不选b
Do you doubt we will defeat Class Two in this basketball mat
C
doubt后接从句时,要视具体的情况而确定是用that还是用whether引导.
通常在否定和疑问结构中,用that引导从句.
如:I don”t doubt that he can finish the task on time.我相信他能按时完成任务.
Do you doubt that she will succeed?你怀疑她会成功吗?
而在肯定结构中,则要用whether或if来引导
如:I doubt whether they can swim across the river.我怀疑他们能否游过河去.
He doubts if she will keep her word.他不敢肯定她是否会遵守诺言.