The number of teachers in our college greatly increased this term. A number of teachers in this school from the countryside.
A. is; is
B. is; are
C. are; are
D. are; is
网友回答
A. is; is
(答案→)B. is; are
C. are; are
D. are; is
解析：the number of“的数量”，作主语时，谓语动词常用单数，而“a number of+复数名词”意思是“大量的；许多”，作主语时，谓语动词用复数形式。