问题补充:
---Could you tell me ?
---Sorry,I have no idea. .
A. when does the History Museum open
B. when the History Museum opens
C. when did the History Museum open
D. when is the History Museum open
答案:
A. when does the History Museum open
(答案→)B. when the History Museum opens
C. when did the History Museum open
D. when is the History Museum open
解析:宾语从句中词序应为陈述句形式。