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：在缺词处加一个漏词符号∧，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：在错词下面划一横线，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处不计分。

In modern society, competition is everywhere. No wonder a English philosopher considers competition the source of a series of problem such as frustration and anxiety. Therefore, if we stress cooperation too much, there would be no progress. In my opinion, all are important and necessary.

Let's take the competition at school for example. Even a gifted student won't make a remarkable progress if he is in a class without competition. That's because competition, and rather, challenge is a driving force made him go forward. On the other hand, if we don't cooperate with each other, it's impossible for us learn from each other. And that's why most of the great discoveries or inventions in the modern world are the result of cooperation.

To conclude, those who laugh last are the people who can successful cope with the relationship between competition and cooperation.

In my opinion, all Mr Tom ______ good to his students in his class at present. He is very strict in their study.

 A. does does does    B. does do do

 C. does does do      D. did do does

In my opinion, all Mr White ____ good to his students in his class at present. He is very strict in their study.

A. does does does   B.does did do   C.does does do   D.did do does

In my opinion, all Mr Tom ______ good to his students in his class at present. He is very strict in their study.

 A. does does does    B. does do do

 C. does does do      D. did do does

30. In my opinion, all Mr. White ___ good to his students in his class at present. He is very strict in their study.

A. does does does                                      B. does do do

C. does does do                                         D. did do does