下面的文中共共有10处错误,每句中最多有两处。错误涉及一个单词的增加、删除或修改

问题：

下面的文中共共有10处错误,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：在缺词处加一个漏词符号（∧），并在此符号下面写出该加的词。

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。

Last Sunday my father and I went fishing along a river. We found the water very dirty

that we could hardly catch any fish in it. A lot of factories along the river always poured

their waste water and rubbish straightly into the river, which made the river polluting. In

this way most of the fish in the river was killed. Unless the rivers all over the country are

polluted like this, no living things will be exist in the water. As we all know, environmental

pollution do great harm to living things. Now more and more people have realized what

serious this problem is. Our government is doing her best to take measure to fight against

pollution. We expect that water in every river will be made cleaner and cleaner before

long.