第二节：短文改错（共10小题，每小题1分，共10分）
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作为。文中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除和修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出改加的词。
删除：把多余的词用斜线划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1.每处错误及其修改均仅限一词；
2.只允许修改10处，多者（从第11处起）不计分。
People communicate in words. Do you think you can communicate without words? A smile on your face show you are happy but friendly.Tears in eyes tell the others that you are sad. When you put up your hand in class, the teacher knew you want say something. Other things can also carry messages. For example, a sign at the bus stop helps you to know which bus to carry. Signs on the door tell you if to go in or out. Have you ever seen that there are a lot of sign around you and that you receive messages form it all the time?