I want to know .A. when will he come backB. when he will come backC. when he comes backD.

问题补充：

I want to know .

A. when will he come back

B. when he will come back

C. when he comes back

D. when is he coming back

答案：

A. when will he come back

(答案→)B. when he will come back

C. when he comes back

D. when is he coming back

解析：可联系答.案.网客服索取。