Question

【题目】I have no doubt _______ we’ll succeed.

A.whatB.whetherC.whenD.that

Answer 1

【答案】D

【解析】

考查同位语从句。句意：毫无疑问，我们会成功。I have no doubt that…名词doubt后为同位语从句，从句句意和句子结构完整，所以连接词为that。故选D项。