选D吧,.
前一个IF不是条件状语,在这里意思和whether一样,是“是否”的意思,该什么时态就用什么时态,因为这里是tomorrow,用将来时
后面一个是条件状语从句,if引导的从句部分用一般现在时comes
8A牛津英语 unit4 I don't know if he _____ tomorrow.If he _____,I
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