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
网友回答
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。