I overslept this morning because my alarm clock ______.
| A．didn’t go out | B．didn’t let out |
| C．didn’t go off | D．didn’t let off |
－Hello, Mr. Wang. Must we wear the school uniform tomorrow?
－You ___________. Only on Mondays. Tomorrow is Tuesday.
| A．don’t have to | B．mustn’t | C．have to | D．must |
The Curies were ___________ the Nobel Prize for their great contributions to science.
| A．awarded | B．rewarded | C．sent | D．provided |
－Why haven’t you posted the letter?
－I __________ to but I forgot about it.
| A．wished | B．liked | C．expected | D．meant |
Often he _________ sit for hours doing nothing at all when he was in low spirits.
| A．should | B．would | C．might | D．could |
Eric _________ go camping with us this Sunday, but he isn’t quite sure yet.
| A．may | B．Shall | C．must | D．can |