Every means ______ tried, yet no result ______encouraging up to now.A.have been
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Every means ______ tried, yet no result ______encouraging up to now.A.have been ...is | B.has been...has been | C.have ...has been | D.has...is |
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答案
B |
解析
考查时态及主谓一致。句意:每一种方法都试过了,到目前为止还没有令人鼓舞的结果。结合语境可知前文描述的是现在已经完成的动作,故用现在完成时态。主语为抽象名词不可数,故谓语动词用单数。下文根据时间状语可知也是现在完成时态,主语result同样是抽象名词,故谓语动词也用单数,选B。 |
举一反三
Tom with his friends ______ volleyball since three o’clock.A.has been playing | B.is playing | C.have been playing | D.have played |
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All that can be said ______.A.has been said | B.have been said | C.is said | D.are to be said |
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Many a school and many a hospital ______ since 1949.A.have set up | B.has set up | C.have been set up | D.has been set up |
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A group of children ______ hide and seek in the garden.A.is playing | B.are playing | C.has been playing | D.was playing |
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The police ______ for the lost child everywhere.A.is looking | B.has looked | C.are looking | D.are looked |
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