选择题 All the ------teachers and ------students will go to plant trees in the park.

问题描述:

选择题 All the ------teachers and ------students will go to plant trees in the park.
选入 men 和doy 为什么boy不加s?

用名词作修饰词时,名词用单数,只有man和woman是例外,它们与后面的主名词单复数同步.