that he runs the fastest in his class.A. It is no doubt B. It is doubtlessC. There is no

问题补充：

that he runs the fastest in his class.

A. It is no doubt

B. It is doubtless

C. There is no doubt

D. I don’t doubt about

答案：

A. It is no doubt

B. It is doubtless

(答案→)C. There is no doubt

D. I don’t doubt about

解析：考查句型。There is no doubt 意为毫无疑问。句意为毫无疑问他是班级里跑的最快的。