In order to find the missing child，villagers ________ all they can over the pas
题型：不详难度：来源：
In order to find the missing child，villagers ________ all they can over the past five hours.(2012·安徽)| A．did | B．do | | C．had done | D．have been doing |
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答案
| D |
解析
| 考查动词时态。句意：为了找到那个丢失的孩子，在过去的五个小时里，村民们做了他们所能做的一切事情。根据句中的can及时间状语“over the past five hours”可知，此处应用现在完成进行时。 |
举一反三
His sister left home in 1998，and ________ since.| A．had not been heard of | B．has not been heard of | | C．had not heard of | D．has not heard of |
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—Why does the lake smell terrible?
—Because large quantities of water ________.| A．have polluted | B．is being polluted | | C．has been polluted | D．have been polluted |
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The water ________ cool when I jumped into the pool for morning exercise.| A．was felt | B．is felt | C．felt | D．feels |
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—I"d like a pen which ________ well.
—Will this one ________？| A．writes；do | B．writes；work | | C．is written；do | D．is written；work |
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Walmart，which is one of the largest American supermarket chains，________ some of its stores open 24 hours on Mondays through Saturdays.(2012·安徽)| A．keeps | B．keep | C．have kept | D．had kept |
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