短文改错。
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文,文中共有l0
处语言错误，每句中最多有两处。每处错误仅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（∧)，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l0处，多者(从第11处起)不计分。
Rose wanted a job. She went to many offices and she didn't like any of them. One day she saw a board
in an office read: "This office needs a typist." Rose was exciting. When Rose went to the manager's office,
the man was writing something. Rose knocked the door and the manager raised her head."Do you need a
typist?" asked Rose."Yes!" he said. Rose clapped her hand. She couldn't help saying,"OK! How much will
you pay for me every month?" The manager thought in a while and said,"I will pay you 77 dollars for the first
three months. Then I will pay you 30 dollars every month." Rose smiled and answer, "Great! I will go and
work here three months late." The manager was speechless.
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中有4种氢原子，一氯代物有4种； 
中只有1种氢原子，一氯代物只有1种； 
中只有1种氢原子，一氯代物只有1种； 