1 . To start with, we are supposed to wear clean clothes which are suitable for students. We should also keep our classroom, school, and our _________(surround) clean and tidy. (所给词的适当形式填空)

2 . 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；
1. One of the best player had been injured.
2. At about 3:00 a.m. in 28 July 1976, bright lights were seen in the sky outside the city of Tangshan.
3. Thousands of children was left without parents.
4. China is wide known for its ancient civilization.
5. Go from junior high school to senior high school is really a big challenge.
6. I am amazed to see such an bad accident.
7. Obvious, I was unhappy, but I won’t quit.
8. Tom is looking forward to meet the new exchange student.
9. The maths homework looks easily.
10. We are very proud from him.

3 . 根据句意需要选择合适的词或短语将句子补充完整。

recommended       masters       competed        exchange        suffered

1. In history class we can __________opinions freely.
2. My advisor ___________that I should sign up for advanced literature because I like English and I’m good at it.
3. They must be athletes who are___________ in their sports and also set good examples for others.
4. How many countries ___________ in the 30th Olympic Games?
5. He __________ many difficulties before he won a silver medal.