题目内容：

___of the students in our class is fifty four and___of us are girls
A.the number,two thirds B.the number two third C.A number,two half D.A number three quaters

优质解答

A 表示分数如果第一个词是one 后面不用+s 如one third三分之一,如果第一个不是one 如two thirds三分之二,third后面就要+s