The teacher __________ have thought Johnson was worth it or she wouldn’t have w
题型：不详难度：来源：
The teacher __________ have thought Johnson was worth it or she wouldn’t have wasted time on him, I suppose. | A．should | B．can | | C．would | D．must |
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答案
| D。 |
解析
| “must+have+过去分词”表示对过去情况的肯定推测。句意为：我想，老师一定认为约翰逊是值得教的，要不然她就不会在他身上浪费时间了。 |
举一反三
| In crowded places like airports and railway stations, you __________ take care of your luggage. |
The biggest problem for most plants, which ___ just get up and run away when threatened, is that animals like to eat them. | A．shan’t | B．can’t | | C．needn’t | D．mustn’t |
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— She looks very happy. She __________ have passed the exam.
— I guess so. It’s not difficult after all. | A．should | B．could | | C．must | D．might |
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—Where is my dictionary? I remember I put it here yesterday.
—You __________ it in the wrong place. | A．must put | B．should have put | | C．might put | D．might have put |
|
—How’s your tour around the North Lake? Is it beautiful?
—It __________ be, but it is now heavily polluted.| A．will | B．would | | C．should | D．must |
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