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：在错的词下划一横线，并在该词下面写出修改后的词。
1. At present, the number of foreign teachers in our school are 30.
2. It may help you to know that there is no such a thing as a perfect speech.
3. I am having trouble make notes in English class.
4. It was the second time that he has been warned of the danger.
5. My manager makes me do things I dislike, such as cleaning the table and read newspapers.
6. It was 8 o'clock that I went back home last night.
7. His speech was frequent stopped by the stranger.
8. The police commanded that the teenager told the truth.
9. Because his carelessness and laziness, Tom did not pass the exam.
10. I am afraid of upset my parents every time I don’t do well in my exam.

2 . ____________ I came, the city wasn't so beautiful．

A．The first time	B．At the first time
C．The first when	D．For the first time

3 . You can’t imagine the difficulty he ____ into the cold river and saving the drowning girl.

A．had to jump	B．had jump
C．had jumping	D．had jumped

4 . After all, reputation is a treasure ________ once lost, can never be won back.

A．one

B．that

C．what

D．Who

5 . Some hard-working students always keep a torch in their dormitories _____ there is a power failure．

A．if	B．unless
C．so that	D．in case

6 . The Great Wall is so good a place ________ many foreign people come to visit ________ it has become well known all over the world.

A．as；as

B．that；that

C．as；that

D．that；as