文中共有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。
If you are on the street, you will see all kinds of people passing by. It's not rare to see people with bad manner. Some throw away rubbish casually. Some spits in public. Some even sit or lie on the ground, completely ignore others' feelings. People feel really badly about all these behaviors.
To be honesty, smoking in public places makes me really annoying. As it is known to us all, smoking does harm for people's health. Not only is it bad for the smoker himself, but also it is threat to the public health. It was hoped that an effective way can be found to educate these people to behave well in public.
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