1 . 请你修改以下的每个句子，每句有1处语言错误，错误涉及一个单词的增加或修改。
增加：在缺词处加一个漏字符号（∧），并在此符号下面写出该加的词。
修改：在错的词下面划一横线，并在横线下面写出修改后的词。
注意：每处错误及其修改仅限一词。
1. It is a great advantage to me that I always keep my words.
2. It was obviously that the manager of the coffee shop was waiting for Li Fang to leave.
3. We benefit in daily exercises.
4. She bought a beautiful dress in a discount yesterday.
5. My bike doesn't work and I'll have it repairing．
6. There's no light on — they mustn’t be at home.
7. She was in a debt when she was poor.
8. Our life has a limit but knowledge is with limits
9. He would appreciated it if you could do him that favor.
10. As a success businessman, he has done everything successfully.