She asked the secretary she could come or not.A. ifB. thatC. whatD. whether

问题补充：

She asked the secretary she could come or not.

A. if

B. that

C. what

D. whether

答案：

A. if

B. that

C. what

(答案→)D. whether

解析：本身if 与whether都可以引导宾语从句，而如果句子后有or not 就只能用whether，故选D