Could you tell me when ___________?

A. the train will arriveB. does the train arrive

C. did the train arriveD. will the train arrive

Could you tell me _______at this station,please?

A. when the train arrives        B.when will the train arrive

C.when did the train arrive            D.when the train would arrive

— Could you tell me ____ ?

     — Certainly. In half an hour.

A. when will the high speed train arrive  

B. when the high speed train will arrive

C. when would the high speed train arrive 

D. when the high speed train would arrive

 --- Could you tell me_____ ?

       ---- Certanily. In half an hour.

        A. when will the high speed train arrive        

B. when the high speed train will arrive      

C. when would the high speed train arrive      

D. when the high speed train would arrive