问题补充:
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
答案:
A. comes, comes
B. will come, will come
C. comes ,will come
(答案→)D. will come, comes
解析:此题重点考查时态,第一句由连词when引导的宾语从句,“我不知道我儿子什么时候要来”用一般将来时;第二句由when引导的时间状语从句,主句用将来时从句用一般现在时表将来,故选D