Question

—When ________ again?

—When he ________, I'll let you know.

1. A.
   will he come; will come
2. B.
   will he come; come
3. C.
   he comes; comes
4. D.
   will he come; comes

Answer 1

D
这题考查时态，第一空用将来时，表示：他什么时候再来？第二空when引导的是时间状语从句用一般现在时，代替一般将来时。选C。