第一节 短文改错
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。
In recent years great changes have been taken place in my hometown. Ten years before, the small and low houses that lie on the north of the lake produced much waste. As the result, the lake was seriously polluted. To the west was a sandy field, what was the source of dust. Even worst, a brickyard on the southwest of the lake used a great deal good soil. Now the poor houses have been replaced by green trees but the brickyard by tall buildings. The sandy field the villagers used to dug is covered with fruit trees. Tourists from nearby towns often spend the weekend boat on the lake.
