I don’t know when he _ tomorrow.If he _,I’ll

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I don’t know when he _________ tomorrow.If he _________,I’ll let you know.
A.comes,comes B.will come,comes C.comes,will come D.came,will come

答案B 第一句为when 引导的宾语从句,从句的时态,要根据时态本身来决定,第二句为if 引导的条件状语,主句为一般将来时,从句要用一般现在时,代替将来时,故选答案为B 查看原帖

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