— Do you know ?— Next Monday.A. when will he come backB. when he will come backC. when did

问题补充：

— Do you know ?

— Next Monday.

A. when will he come back

B. when he will come back

C. when did he come back

D. when he came back

答案：

A. when will he come back

(答案→)B. when he will come back

C. when did he come back

D. when he came back

解析：句意：你知道他何时回来吗？下周一。宾语从句用陈述句的语序。同时句子用一般将来时，故选B