As soon as I got on the bus I realized that I________ my papers in the house.A．
题型：不详难度：来源：
As soon as I got on the bus I realized that I________ my papers in the house.| A．left | B．was leaving | C．had left | D．have left |
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答案
| C |
解析
| 考查时态。句意：我一登上公交车就意识到我把我的论文丢在家中了。结合语境可知从句描述的是过去已经完成的动作，故用过去完成时态，选C。 |
举一反三
The room is very large and only little room_______ by the new piano.| A．are taken up | B．takes up | C．is taken up | D．is taking up |
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When and where to go for the on-salary holiday _____ yet.| A．are not decided | B．have not been decided | | C．is not being decided | D．has not been decided |
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Is this the first time that you _____ here?| A．visit | B．are visiting | C．had visited | D．have visited |
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Travelers that they should bring their ID cards with them.| A．have reminded | B．are reminded | | C．were reminding | D．had been reminded |
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The water will be polluted unless some measures _____.| A．will be taken | B．are being taken | C．are taken | D．were taken |
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