Your advice was a great help to us, without which all our efforts .A．would
题型：不详难度：来源：
Your advice was a great help to us, without which all our efforts .| A．wouldn’t pay off | B．hadn’t paid off | | C．wouldn’t have paid off | D．didn’t pay off |
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答案
| C |
解析
| 考查虚拟语气。根据前面的was和句意可知本题是一个由without引导的与过去事实相反含蓄条件句，使用情态动词+have done的形式。句意：你的建议对我们很有益，要是没有你的建议，我们的努力就不会得到回报。 |
举一反三
Had they known what was coming next, they ___________ second thoughts.| A．may have | B．could have | C．must have had | D．might have had |
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The teacher commanded that the naughty boy _____, but he refused.| A．stand up | B．stood up | C．would stand up | D．had stood up |
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The chemistry teacher demanded that the laboratory report _________ immediately after the experiment was done.| A．to be written | B．would be written | | C．be written | D．must be written |
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This is his only request that the room_______ after being used.| A．be cleaned | B．would be cleaned | C．is cleaned | D．will be cleaned |
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It’s high time that he settled down in the city and ____ a new life.| A．start | B．started | C．to start | D．starting |
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