题目内容：

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。

On December 30，after two weeks’training，we finally began our work for volunteer guides in a museum.During the first two weeks，I learnt a lot about the story behind the artworks.In order to do good in the work，my teammates and I made fully preparations.We first worked out a careful plan.Then we practiced use proper body language to explain the artworks better.The month-long volunteer work has now come to end，from what I understand that it isn’t easy to be a good guide.Besides.I also realize that how important teamwork is.I believed that I will get lifelong benefits from the short and meaningful experience.