单句改错 下面每句中都有一处错误。错误涉及一个单词的增加、删除或修改。 增加：

问题：

单句改错

       下面每句中都有一处错误。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：每处错误及其修改均仅限一词；

1. The police is investigating (调查) the cause of the accident.

2. It's quite difficult to find who's responsible of pollution.

3. That's why I want to find out.

4. Here is the book written by him of lots of pictures in it.

5. That sounds like a great idea.

6. There are five for you to choose . You can choose one of them.

7. Please dial this number if you want any farther information.

8. The solution of the problem was helpful.

9. He apologised his teacher by writing him a letter.

10. He passed the English test, it really surprised his teachers.