There is no doubt he will win.A. whetherB. if C. thatD. when

问题补充：

There is no doubt he will win.

A. whether

B. if

C. that

D. when

答案：

A. whether

B. if

(答案→)C. that

D. when

解析：考查固定句式。固定句式：There is no doubt that…毫无疑问…；that引导的是一个同位语从句解释名词的内容。句意：毫无疑问他将会获胜.故C正确。