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The company had about
单选题 The company had about 20 notebook computers, but only one-third __________used regularly.

A.is 

B.are

C.was

D.were

正确答案: D

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答案解析: 本题考查时态和主谓一致。句意:这家公司大约有20台笔记表电脑,但是只有三分之一经常被使用。一般来讲,分数作主语时.谓语用单数。但是由前半句about it 20 notebook computers可知,此处用复数本句的时态是过去时,因此应该用were。



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