题目内容
A large quantity of air conditioners ________ out since the temperature is high.
A.have been sold
B.has been sold
C.have sold
D.has sold
答案:B解析:“a(large)quantity of+名词”作主语时,谓语动词的形式由quantity 决定,用单数形式;“large quantities of+名词”作主语时,谓语动词的形式也由quantities 决定,用复数形式。另外,句子的主语和谓语动词是逻辑上的动宾关系,可知选B。
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