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文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错词下划一横线，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 used to communicate with each other through letters and public phones. So nowadays they use mobile phones and the Internet instead of. This change in communication have good effects on our works and life. Comparing with letters and public phones, mobile phones and the Internet are fast and much more convenient. If you missed your grandmother, you just lake out your phone and say “hello” to him. And she will be happy to hear your voice. If you want to place order with a foreign company, you can e-mail the message. It'll be minutes after you get their reply.
