大家帮忙看看这几道英语改错题
问题描述：
大家帮忙看看这几道英语改错题
1. I and Jack both come from America.
2. This is Mary.He is English.
3. I can’t find my pen.I have to buy it.
4.Who are these white birds ?
They are Mr Green’s.
有哪位高手能帮我解下这几道题
答
Jack and I both come from America.
This is Mary.She is English.
I can't find my pen.I have to buy one.
Whose are these white birds?