精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区

In our class      of the students      girls.

A．three fifths; are             B．three fifth; are 

C．three fifth; is               D．three fifths; is

In our class________ of the students_______ girls．

A．three fifths；are   B．three fifth；are    C．three fifths；is  D．three fifth；is

In our class ________ of the students are girls.

[　　]

In our class, about        of the students are girls.
A．three fifth          B．third fifths         C．three fifths

In our class, about        of the students are girls.

A．three fifth          B．third fifths         C．three fifths