Question

--- Could you tell me_____ ? 

--- Certanily. In half an hour.

1. A.
   when will the high speed train arrive
2. B.
   when the high speed train will arrive
3. C.
   when would the high speed train arrive
4. D.
   when the high speed train would arrive

Answer 1

B
本题考查一般将来时，用will而不是用would，when引导的从句中，后面句子是一般陈述句语序，答案选B。