问题补充:
The number of people invited fifty, but a number of them absent(缺席) for different reasons.
A. were; was
B. was; was
C. was; were
D. were; were
答案:
A. were; was
B. was; was
(答案→)C. was; were
D. were; were
解析:句意:受到邀请的人数是五十,但是很多人因为各种各样的原因而缺席。The number of表示“的数量”,其主语为数目,所以后面的谓语动词用单数形式,而a number of them表示“大量,许多”,后面修饰可数名词的复数,后面的谓语动词也用复数形式;故选C。