three-fourths 和 three fourths 哪个表达方式是对的?

three-fourths 和 three fourths 哪个表达方式是对的? 对three fourths 提问用什么 "a fourth"和“three fourths”是什么意思? three fourths of the homework have finished Three-fourths of the buildings was destroyed. Three fourths of the homework ( )toda three fourths与three-fourth有什么不同? three fourths和the third four分别是什么意思,有什么区别 three-fourths of the surface of the earth ( ) sea 是is 还是are? Three-fourths of the homework ______today.a.have finished b. a.Three fourths of the teachers present _____ against three-fourths of the surface of the earth ( ) sea