Question

It rained heavily yesterday, but ________ of the students was late for school．

[　　]

A．both

B．all

C．none

Answer 1

答案：C
解析：

both of和all of后面接名词复数形式，谓语动词用复数，none of加名词时，既可以用单数也可以用复数，所以答案选C。