There is no doubt he will finish the task in time.A. ifB. whetherC. whatD. that

发布时间：2020-08-16 23:43:09

There is no doubt      he will finish the task in time.
A. if
B. whether
C. what
D. that

网友回答

A. if
B. whether
C. what
(答案→)D. that
解析：句意,无疑他会按时完成这项任务。there is no doubt 句型中当doubt本身被否定时，其后跟的宾语从句或同位语从句应用that引导；doubt被肯定时，其后的宾语从句用if或whether引导，同位语从句则由whether引导，不能用if引导。故选D.
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