——How do you find the cake? ——This cake is very sweet. You ______ a lot of suga
题型：不详难度：来源：
——How do you find the cake?
——This cake is very sweet. You ______ a lot of sugar in it. | A．should put | B．could have put | C．might put | D．must have put |
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答案
| D |
解析
试题分析：考查情态动词用法。情态动词+动词原形表示在现在情况的推测；情态动词+have done表示对过去情况的推测。本题蛋糕很甜，说明放了很多的糖是在过去发生的事情，排除AC。Must have done一定做了某事。Could have done可能做了某事，句意你认为蛋糕怎么样？—非常甜。你一定放了很多的糖。故Ｄ正确。
点评：must表示有把握的肯定推测。如果是对过去的推测，使用情态动词+have done的形式。 |
举一反三
We suggest that more measures _________ to solve the problem of overpopulation.| A．will be taken | B．be taken | | C．can be taken | D．must be taken |
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— I saw Mr Li at the meeting yesterday.
— Did you? He _______ have attended it, for he had asked for sick leave.| A．needn’t | B．couldn’t | C．shouldn’t | D．mustn’t |
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—I’ m sorry. I ______ at you the other day.
---Forget it. I was a bit out of control myself.| A．shouldn’t shout | B．shouldn’t have shouted | | C．mustn’t shout | D．mustn’t have shouted |
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If the weather had been better, we could have had a picnic. But it _____ all day.| A．rains | B．has rained | C．rained | D．is raining |
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It was dangerous for you to swim in that river. You eaten by the fish.| A．might have been | B．must have been | | C．could have been | D．should have been |
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