You were out enjoying yourself when you ________.
A．must have studiedB．would have studied
C．should be studyingD．ought to have been studying
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______ you need any help, you can always phone me at the office.
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Life ____ be much happier if we ____ only be born at the age of 80 and gradually approach 18.
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I have been looking for Michael for a whole day. Where ______ he have gone?
A．shouldB．canC．mustD．may

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科目：高中英語 來源：不詳 題型：單選題


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科目：高中英語 來源：不詳 題型：單選題


The car         the truck so closely, otherwise the traffic accident could have been avoided.
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In the last decade, disasters have become increasingly common. It’s high time that we ______these issues more seriously.
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