题目内容

I don’t know if Jack          . If he        , call me, please.
A. will come; will comes       B. comes; come        C. will come; comes         
C
在第一个句子中，if 引导是宾语从句，主句为一般现在时，从句根据句子意思，用一般将来时，在第二句子中，是if 引导的条件状语中，如果主句为祈使句，从句用一般现在时代替将来时，故选C
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