----She must have gone back to the valley. ----No, she _____. The entrance to it
题型：不详难度：来源：
----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 |
答案
| C |
解析
| must have gone表示对过去事情的肯定推测，答话了否定的，所以这里用couldn’t表示不可能。 |
举一反三
| 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 |
|
You _________ be right, but I don’t think you are.| A．can | B．could | C．must | D．should |
|
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 |
|
--- I hear you have written a novel.
--- Yes, the book ______ come out in a month or so.| A．can | B．must | C．should | D．would |
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