题目内容
【题目】The number of people invited _____ fifty, but a number of them _____ absent for different reasons.
were; was
was; was
was; were
were; were
【答案】C
【解析】前一分句的主语为the number of people,故谓语动词用单数形式;而后一分句的主语为a number of them,故谓语动词用复数形式。
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