___of the trees turn yellow.A.Three-fifths B.Three-fifth C.Three fifths
问题描述：
___of the trees turn yellow.A.Three-fifths B.Three-fifth C.Three fifths
答
A 五分之三的树木变黄.
B三十五的树木变黄.
C五分之四的树木变黄.
选AA的选项分数之间可以加连号吗？而且Three-fifths 的fifth可以加s吗？像A eight-year-old boy 不可以加s的