He looks very tired . He ____ to bed too late last night . A．must goB．must have
题型：不详难度：来源：
He looks very tired . He ____ to bed too late last night . | A．must go | B．must have gone | C．could go | D．didn""t go |
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答案
| B。 |
解析
| must 用于表示推测时，只能用于肯定句，完成式表示对过去情况的推测。 |
举一反三
If you ____ me , I""ll give you some advice . | A．listened to | B．will hear | C．will listen to | D．will listen |
|
A lion ____ only attack a human being when it is hungry . | A．should | B．can | C．will | D．shall |
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I""m surprised that he ____ to help me when I needed his help . | A．should refuse | B．would have refused | | C．should have refused to | D．may have refused |
|
— Would you open the window , please ?
— Yes , I ____ . |
The money was soon spent , so he ____ go hungry . | A．must | B．had to | C．might | D．should |
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