题目内容
The company had about 20 notebook computers but only one-third_______used regularly.Now we have 60 working all day long.
A.is B.are C.was D.were
D
解析:
一般来讲,分数作主语时,谓语用单数。但是此处前半句话说了about 20 notebook computers,因此它的1/3是复数。本句的时态是过去时,因此应该用were。
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