Question

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

Answer 1

D

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。