---When again?-When he I’ll let you know.A. he comes; comesB. will he come; will com

问题补充：

---When again? ---When he , I’ll let you know.

A. he comes; comes

B. will he come; will come

C. he comes; will come

D. will he come; comes

答案：

A. he comes; comes

B. will he come; will come

C. he comes; will come

(答案→)D. will he come; comes

解析：第一空是特殊疑问句，应用疑问形式，第二空，在时间状语从句中，主句用将来时态，从句用一般现在时态表将来，句意：他什么时候再回来？当他回来的时候，我会让你知道的。所以选D。