问题补充:
--Could you tell me ?
--Next week.
A. when John will come back
B. when will John come back
C. when John came back
D. when did John come back
答案:
(答案→)A. when John will come back
B. when will John come back
C. when John came back
D. when did John come back
解析:宾语从句中一般为陈述句语序,选项A问的是约翰什么时候回来,将来时态。选项C问的是约翰什么时候回来的,过去时态。根据答语下周,表示将来时态的时间状语,选A.