日日人人_亚洲美女在线视频_av手机在线播放_国产大片aaa_欧美中文日韩_午夜理伦三级

---Excuse me, could you tell me _______?
---Sorry, sir. I wasn't there at that time.
A. how did the accident happen
B. how the accident happened
C. how does the accident happen

--- Excuse me, could you tell me _____________?

    --- Sorry, sir, I wasn’t there at that time.

A.   how did the accident happen    B. how the accident happened

C.  how does the accident happen   D. how the accident happens