every student 是单数还是负数?each student呢书上说Each student will have their own online teacher.为什么这里student不加s,又说their呢?

分类: 作业答案 • 2022-05-16 18:39:35

问题描述：

every student 是单数还是负数?each student呢
书上说Each student will have their own online teacher.为什么这里student不加s,又说their呢?

答