I don't doubt_____he'll come.空格填that,whether,if 那个对?I don't doubt_____he'll come.空格填that,whether,if 哪个对?

I don't doubt_____he'll come.空格填that,whether,if 那个对?I don't doubt_____he'll come.空格填that,whether,if 哪个对?
I don't doubt_____he'll come.空格填that,whether,if 那个对?
I don't doubt_____he'll come.空格填that,whether,if 哪个对?

I don't doubt_____he'll come.空格填that,whether,if 那个对?I don't doubt_____he'll come.空格填that,whether,if 哪个对?
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