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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

【解析】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

 

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