I have no doubt______ Bob will work out all the math problems.I have no doubt_____ Bob will work out all the math problems.Awhether Bthat

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I have no doubt______ Bob will work out all the math problems.
I have no doubt_____ Bob will work out all the math problems.
Awhether Bthat

B
如果是有疑问,就是whether
这里是没有疑问,显然后面是陈述句