I’m not sure when he. When he I’ll tell you.A. comes; will comeB. will come; will comeC.

问题补充：

I’m not sure when he. When he , I’ll tell you.

A. comes; will come

B. will come; will come

C. comes; comes

D. will come; comes

答案：

A. comes; will come

B. will come; will come

C. comes; comes

(答案→)D. will come; comes

解析：此题重点考察when引导的时间状语从句和宾语从句的时态问题。前者根据语境可选用所需的任何时态；后者一般要用一般现在时。