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题目
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----- Can I go back home now? ----- You______ to leave until you ______ your work.
A.won’t allow; finishB.won’t be allowed; will finish
C.won’t be allowed; have finishedD.won’t allow; will finish

答案
C
解析
考查时态。句意:我现在可以回家了吗?——直到你完成作业后才能让你回家。可知从句描述的是某个时间前完成的动作,故用完成时态。主句表示的是将来的动作,结合固定结构not ……until可知选C。
核心考点
试题【----- Can I go back home now? ----- You______ to leave until you ______ your wor】;主要考察你对一般现在时等知识点的理解。[详细]
举一反三
With the help of high technology, many new substances(物质)______in the past years.
A.discoveredB.have discoveredC.had been discoveredD.have been discovered

题型:不详难度:| 查看答案
She said that I could use her car while mine _________________.
A.was repairedB.repairedC.was being repairedD.would be repaired

题型:不详难度:| 查看答案
. ---- Do you know our hometown at all?
---- No, this is the first time I ____ here.
A.wasB.have beenC.cameD.am coming

题型:不详难度:| 查看答案
. ---- How long ____ at this job?
---- Since 1990.
A.were you employedB.have you been employed
C.had you been employedD.will you be employed

题型:不详难度:| 查看答案
– Why isn’t the recorder ready yet?
--- I’m sorry, sir. It ______ in the factory.
A.is being repairedB.is repairedC.has been repairedD.hasn’t repaired

题型:不详难度:| 查看答案
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