◎ 题干

I don't know when my son ______ back, but when he ______ back, I'll give you a call.

[     ]
A. comes; comes
B. will come; will come
C. comes; will come
D. will come; comes
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—Do you know when Dr White ____ for dinner this evening? —No, but I think he ____ when he is free. [ ]A. will come; comes B. will come; will come C. comes…”主要考查了你对  【宾语从句】【状语从句】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。