I don’t know when he _. When he ...

I don’t know when he _____. When he _____ here, I’ll call you in a minute.

A. will come; will arrive

B. comes; arrives

C. will come; arrives

D. comes; will arrive

C 【解析】试题分析：句意：我不知道他将什么时间来。当他到达了，我马上给你打电话。when引导时间状语从句，主将从现。when引导的宾语从句，主句用一般现在时，从句用将来时。故选C。考点：考查宾语从句及时间状语从句的用法。

考点分析：

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I don’t know when he _____. When he ____...