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

问题补充：

In our class, about of the students are girls.

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

答案：

解析：英语中分数的表示是用基数词表示分子，用序数词表示分母。当分子大于一时，分母用复数形式。故选A。