Question

A number of students _______ reading in the classroom now.

A．is

B．was

C．are

D．were

Answer 1

C

C 考查a number of和the number of的區別，前者意為“許多”，與many等同；后者意為“......的數量”，謂語用單數。“現在有很多學生在教室里讀書。”故選C。