There is no doubt _______ buying things online makes life a little easier.

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问题 There is no doubt _______ buying things online makes life a little easier.

选项 A、whether
B、that
C、why
D、when

答案B

解析同位语从句引导词。doubt在否定句中(there is no doubt．．．)带同位语从句时引导词通常是that；在肯定句中(there is some doubt．．．)则一般用whether，因此答案为B。

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专业英语四级

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