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、删除或修改。
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。
删除：把多余的词用斜线(\)划掉。
修改：在错的词下面画一横线，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. Most of the families in China consist for one husband, one wife and one child.
2. In conclusion, walking is a cheap, safe, enjoy and readily available form of exercise.
3. They could take place of power plants.
4. These tools can be fold into a neat little pack and fastened on your belt.
5. Suddenly the driver began to speed it up.
6. I lost sights of him but could still hear his footsteps.
7. The little boy slide into his bedroom while no one was looking.
8. Guiding by the concept of “green Olympics, high-tech Olympics and people’s Olympics”, we have tried our best to do the preparations for the Games.
9. Deeply impressed on its beauty, I fell in love with Guilin.
10. It took me a few weeks to get used to my new surrounding.