It was sunny this afternoon. Mum and I go to the park which is near my home to a walk. When we were walking, I saw the little girl. She was eating a banana．After she finished eating them, she threw the banana skin on the ground into the park. I walk over to pick it up and told her it was wrong do so. If all of us do like that, the park will become dirtier. Then we can't enjoy by ourselves in it. All of us should do something to make our environment clean but beautiful.

增加：在缺词处加一个漏字符号（∧），并在其右边横线处写出该加的词。

删除：把多余的词用斜线（﹨）划掉，在该行右边横线写出该词，并用斜线划掉。

修改：在错的词下划一横线（__），并在该行右边横线写出修改后的词。

    Nowadays big cities may be wonderful places to live. There are many nice things to see and to do. And there are serious problems in big cities. The cost of living is high.

    Every year many people move to the cities because of more chances (机会)to find job or good schools. But sometimes some people can't. Also, having too many people in a small place makes it hard to keep the cities safe and clean. Someone enjoy staying in big cities, but others don't. There really are a lot of problems, so you should think about it carefully before moving there.

It's between the bookcase or the desk.

I usually go to the library in weekends.