English is a language that many people around the world _______ not speak perfec
题型：不详难度：来源：
English is a language that many people around the world _______ not speak perfectly but at least _______ understand.| A．might；could | B．will；must | | C．would；might | D．can；may |
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答案
| A |
解析
| 情态动词might用于表推测时，和may相同，用于肯定句和否定句，所表示的可能性较小；could用于表推测时，语气与might差不多。 |
举一反三
Some aspects of a pilot’s job _______ be boring,and pilots often _______ work at inconvenient hours.| A．can; have to | B．may; have to | | C．have to; may | D．ought to; must |
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He _______ more visits to his parents.He has been regretting not doing so since they passed away.| A．should pay | | B．would pay | | C．should have paid | | D．would have paid |
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He must have been late for the conference yesterday, _______?| A．didn’t he | B．hasn’t he | | C．mustn’t he | D．wasn’t he |
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He _______ have completed his work；otherwise, he wouldn’t be enjoying himself by the seaside.| A．should | B．must | | C．wouldn’t | D．can’t |
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—Can we ski on this mountain?
—Of course.However, at no time _______ you do so alone.| A．could | B．might | | C．need | D．must |
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