There is no doubt      you will pass the exam this time. You have worked so hard in the past months.

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

There is no doubt      you will pass the exam this time. You have worked so hard in the past      months.

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

There is no doubt ________ you will pass the exam this time．You have worked so hard in the past months．

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