---Excuse me, could you tell me _______?
问题:
---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
---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