The police still haven’t found her, but they’re doing all they _____. A．mayB．can
题型：不详难度：来源：
| The police still haven’t found her, but they’re doing all they _____. |
答案
| B |
解析
| do all one can 意为“尽力”或“竭尽全力”。 |
举一反三
You _____ practise the drums while the baby is sleeping. | A．needn’t | B．mightn’t | | C．mustn’t | D．won’t |
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You _____ him the news; he knew it already. | A．needn’t tell | B．needn’t have told | | C．mightn’t tell | D．mightn’t have told |
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As she’s not here, I suppose she _____ home.| A．must go | B．must have gone | | C．might go | D．might be going |
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Are you still here? You ______ home hours ago. | A．should go | B．should have gone | | C．might go | D．may have gone |
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I _______ have met him a long time ago. Both his name and face are very familiar.| A．may | B．can | | C．would | D．should |
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