1. (2017高三上·六安月考) 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。错误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。

    With the development of modem technology, there are plenty ways for us to contact people. One of our most favorite ways is probably WeChat. The main reason may be because it is very convenient to use with the popularity of the smart phone. We can contact friends whenever it is but wherever we are. We like using WeChat also because it is very cheap. It costs only a little and is even free unless Wi-Fi is available. Another advantage lies in the speed with which messages get sent and received. It's so fast that we can get in touch with others instantly. More importantly, using WeChat, we can give friends not only very exact written informations but also very moving greeting words, that we might not say face to face. Besides, music as well as pictures and videos are often uploaded through WeChat, so it is now a useful entertainment tool.

In a word, using WeChat is a good choice for you to keep in contact with friends.