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。

My young cousin Tom seems to have endless question to ask every day. One day, he asked me how life on earth began after watch a film. To be honest, the question remains a puzzle to me. Therefore, in order not to let him down, I found the answer in a book. It says, “Long ago the earth was a cloud dust. The dust settled into a solid globe before billions of years. The earth became such violent that it exploded loud. Then water, that is important for life to develop, began to appear. As the time went on, different life forms began.”