The number of people invited to the party 200 but a number of them absent for different re

问题补充：

The number of people invited to the party 200 but a number of them absent for different reasons.

A. were ; was

B. was ; were

C. was ; was

D. were ; were

答案：

A. were ; was

(答案→)B. was ; were

C. was ; was

D. were ; were

解析：考查主谓一致。The number of做主语时谓语动词用单数。A number of修饰可数名词复数做主语时谓语动词用复数形式。故B正确。