问题补充:
I don know when he . But when he back, I’ll let you know.
A. comes ; will come
B. will come; comes
C. comes;comes
D. will come; will come
答案:
A. comes ; will come
(答案→)B. will come; comes
C. comes;comes
D. will come; will come
解析:第一空填将来时will come ,第二空用comes表示“将来”.