问题补充:
The number of people invited to the conference 150,but a number of them absent for different reasons.
A. were;was
B. were;were
C. was;were
D. was;was
答案:
A. were;was
B. were;were
(答案→)C. was;were
D. was;was
解析:the number of+名词复数作主语时,谓语动词用单数;a number of+名词复数作主语时,表示“许多/大量的……”,谓语动词用复数。