She is late. What _____have happened to her? A should B must C can D w
题型：不详难度：来源：
She is late. What _____have happened to her?
A should B must C can D would |
答案
| C |
解析
| 这里用can表示一种推测。 |
举一反三
----She must have gone back to the valley.
----No, she _____. The entrance to it was nowhere to be found.
A mustn’t B needn’t C couldn’t D hadn’t |
| A．may not be | B．won’t be | C．couldn’t be | D．mustn’t be |
|
“Do you think he is lazy?” “I _________ so once, but I don’t now.”| A．may have thought | B．can have thought | C．may think | D．might think |
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You _________ be right, but I don’t think you are.| A．can | B．could | C．must | D．should |
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Mike is often absent from class.” “Tell him he _________ answer for it if he goes on behaving like that.”| A．shall | B．will | C．would | D．can |
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