题目内容
There is no doubt_______ he’ll succeed in the future.
A. what B. that C. whether D. if
B
一般情况下表示怀疑的、不确信的事常用whether,表示不怀疑、确信的事常用that。如:
I doubt/don’t know/wonder/am not sure/question whether ...
I am sure/don’t doubt/don’t question that…
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