. We finished the run in less than half the time _________．A．allowingB．to allowC
题型：不详难度：来源：
. We finished the run in less than half the time _________．| A．allowing | B．to allow | | C．allowed | D．allows |
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答案
| C. |
解析
| allowed为过去分词，在句中做定语修饰the time。现在分词做定语表示正在进行的或经常性、习惯性的动作；过去分词做定语表示被动的完成的动作。 |
举一反三
_________ the project as planned，we’ll have to work two more hours a day．| A．Completing | B．Complete | | C．Completed | D．To complete |
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He was busy writing a story，only _________ once in a while to smoke a cigarette．| A．to stop | B．stopping | | C．to have stopped | D．having stopped |
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_________ in the fields on a March afternoon，he could feel the warmth of spring．| A．To walk | B．Walking | | C．Walked | D．Having walked |
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I saw the boy _____ out a moment ago.| A．run | B．runs | | C．how to run | D．running |
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