I don’t know if he _.If he _...

I don’t know if he _______.If he ________ .I will tell you at once.

A. comes; comes B. will come, will come

C. will come, comes D. comes; will come

C 【解析】试题分析：句意：我不知道他是否会来。如果他来了，我会马上告诉你。此题考查if引导的条件状语从句和宾语从句的相关知识。根据语法知识可知第一个分句是if引导的宾语从句，且表示将来的动作，故用一般将来时；后半句是条件状语从句，从句用一般现在时，主句要用将来时，故选C。考点：考查动词的时态。

考点分析：

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I don’t know if he _______.If he _______...