I have no doubt _____ he will get the first place in the competition.

A. whether             B. if                C. that             D. About

I have no doubt _____ __he can do the job well though he doesn’t like it.

 I have no doubt _____ __he can do the job well though he doesn’t like it.

I have no doubt ________ he'll turn up tonight.

1. A.
   that
2. B.
   if
3. C.
   How
4. D.
   about

I have no doubt ________ he will help me this time．

1. A.
   if
2. B.
   that
3. C.
   whether
4. D.
   how