I’m writing to invite you to the community lecture
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(＼)划掉。
修改：在错的词下画一横线，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。
We produced waste every day. We throw all of it into the same dustbin without thinking whether it is recyclable and not. This will bring lots of problem. So waste sorting is of very important. On the one hand, without waste sorting, some waste will remain when it was placed for a long time. As a result, they will pollute the earth. On other hand, waste is just the misplace resources. We can sort waste and making full use of whatever can be used. Meanwhile, the government should take effectively measures to deal with waste sorting.
