Question

【题目】I don't doubt _______ she can do it well, but I doubt _______ she is willing to do it.
A.that; that
B.if; if
C.that; if
D.if; that

Answer 1

【答案】C
【解析】句意：我毫不怀疑他能完成任务，但是我怀疑他是否愿意做那个任务。doubt怀疑，是动词，在否定句和疑问句中，后接that引导的宾语从句；在肯定句中，后面一般接whether或if引导的宾语从句。故选C。