短文改错（共10小题；每小题1分，满分10分）
短文中共有10处语言错误。错误涉及到添加、删除或修改。
添加：在缺词处加符号Λ，并在其下面写出该加的词。删除：把多余的词用／划掉
修改：在错词下面划个横线，并在该词下面写出修改后的词。
Attention please, everyone!
About 50 students from American will come to our school for the visit on October 4th,
Sunday. Our class will greet them. We will meet at the school gate at 8:40 am and giving them a
warm welcome. They will arrive at 9:00 am, and then we will show the American students to the
schoolyard, the lab building or the teaching building. There will have a friendly basketball game
on the playground at 10:00. we will leave our schools at 11:00. We should polite to our guests
and talk with them in the English.
That’s all. Thank you.