题目内容
They have got lost, or had an accident.
| A．can | B．might | C．must | D．mustn’t |
B
解析试题分析：考查情态动词：句意：他们可能迷路了，也可能出事了。Might have done过去可能做了，can用于推测，一般是否定和疑问句中，must have done过去一定做了，mustn’t不能和have done连用，选B。
考点：考查情态动词
名校课堂系列答案I know you have eaten all sorts of junk food your mother and I probably _____ you have.
| A．shouldn’t let | B．can’t let | C．couldn’t have let | D．shouldn’t have let |
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| A．need | B．can | C．must | D．shall |
—Why does Mary look so worried today?
—I’m not sure, but she _____ a small accident driving here.
| A．must have | B．might have | C．must have had | D．might have had |
I ______have come here in time, but I met an old friend of mine. I stopped and talked with him for some time.
| A．shouldn’t | B．must | C．needn’t | D．could |
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| A．shall | B．will | C．need | D．may |
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| A．would eat out | B．could have eaten out | C．should eat out | D．must have eaten out |
You _____ get the machine repaired this week. I won’t need it until next month.
| A．mustn’t | B．needn’t | C．shouldn’t | D．can’t |