1 . 英语课上，老师要求同桌之间相互修改作文。假设以下短文为你同桌所写，请你对其进行修改。短文中共有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:在缺词处加一个漏字符号(A)，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。
You must have heard about Dolly and have been amazed by the first cloned animal. But here came a problem; should we clone humans? When being asked about this question, a large number of people which are interested in the topic hold the view that it’s beneficial to clone humans. Therefore, some other people, me including, are against this idea. Cloning humans can bring negative effects and wrong informations. In the first place, they may not be treated equal as normal people, which I believe will make him suffer a lot. In second place, human cloning may lead in some social disorder, and it is quite dangerous.

3 . 最近很多大城市都投放了公共单车（shared bikes），比如摩拜单车(Mobike)、Ofo共享单车等。由于它们方便停放，骑车也能起到锻炼身体的作用，作为代步工具很受大家欢迎。但是，各地也出现了很多毁车现象，比如刮掉车上的二维码（QK code）、上私锁等。你对这种现象怎么看？你对共享单车公司有什么建议吗？请你给相关部门写封信，要点如下：
1. 共享单车给人们带来的便利/好处；
2. 共亨单车使用中出现的问题；
3. 你对解决问题的建议。
参考词汇：bike-sharing companies共享单车公司，Mobike和Ofo是两家共享单车公司
注意：词数100左右；开头和结尾已给出。
Dear Sir/ Madam,

I’m Li Hua, ...

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Yours sincerely,

Li Hua