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?

问题描述:

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?

that