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.(2006浙江)
A. is B. are C. was D. were
D
解析:
D考查主谓一致。主语为one-third,但省略了notebook computers,分数的主谓一致依据修饰的名词的数,故答案为D。
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