Nowadays ____of business letters are written in English.A .two third B .two thirds 选什么two thirds可以变成two-third吗?21世纪报里选two-third是正确的吗

问题描述:

Nowadays ____of business letters are written in English.A .two third B .two thirds 选什么
two thirds可以变成two-third吗?21世纪报里选two-third是正确的吗