( )of students in our school ( )from America.A .A number is
( )of students in our school ( )from America.A .A number is B.A number are
( )of students in our school ( )from America.
A .A number is B.A number are C.The number is D.The number are
A number 对应的谓语动词是复数
The number 对应单数、 在B.C之间徘徊.改选什么,