把单数句改成复数句,复数句改成单数句!急

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/16 06:09:51

把单数句改成复数句,复数句改成单数句!急
1． This is my sister._________________________________
2． Those are boxes._______________________________
3． They are teachers.________________________________
4． These are desks .________________________________
5． We are boys._________________________________.

They are my sisters.
That is a box.
He is a teacher.
This is a desk.
I am a boy.

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