---When did you go to bed last night?
---______________
| A．Until 11 o’clock |
| B．since my mother came back |
| C．Until I finished my homework. |
| D．Not until my mother came back |
Today, we _____ work as hard as people did in the past.
| A．mustn’t | B．can’t | C．shouldn’t | D．don’t have to |
It was because I was caught in the traffic jam ________ I came to school late this morning.
| A．which | B．when | C．what | D．that |
There will be a new park in the center of the city, ______?
| A．isn’t there | B．won’t there | C．isn’t they | D．won’t they |
Is this museum ___________ he wishes to visit?
| A．the one | B．which | C．to which | D．to that |
A lot of meetings were------ because of the dangerous disease.
| A．turned off | B．set off | C．put off | D．taken off |