IX.

1. Minh does morning exercises regularly so as to be healthy.

2. I'm learning English in order to read book in English.

3. She said nothing so as not to make him angry.

4. The man who was injured in the accident was taken to the local hospital.

5. The musician appeared in the concert last night is internationally famous.

X.

1. It's very important to keep the environment clean.

2. The time machine will be shown to the public when they finish it.

3. He was delighted that he received his aunt's letter.

4. People recycle old car tires to make shoes and sandals.

5. I'm very sad not to be accepted in that group.

6. I haven't spoken to her for three years.

7. Tam used to type fast.

8. My father asked me to turn down the radio for him.

9. It is Lan's fifteen birthday next week.

10. When did you first used the pen?

XI.

1. Minh has collected stamps since he was a child.

2. I am working so we can not go somewhere tomorrow.

3. They are going back to England in two months.

4. TV is not only entertainment but also bringing information.

5. Life at home on the farm is always struggle with a nature. (?)

IX ,

1. Minh does morning exercises regularly so as to be healthy

2. I'm learning English in order to read book in English

3. She said nothing so as not to make him angry

4. The man injured in the accident was taken to the local hospital

5. The musician appearing in the concert last night is internationally famous

X 

1- It’s very important to keep the enviroment clean 
2.- The time machine will be shown to the public when they finished it  
3.- He was delighted that his aunt sent him letter
4. .- People recycle old car tires to make shoes and sandals 
5.- I’m very sad not to be accepted in that group
6. - I haven’t spoken to her for 3 years
7.  Tam used to type faster than she does now
8. - The film was so interesting that we watched it several times 
9.- Peter was so ill that he can't get up
10. - When did you last use the pen?

XI

1. Minh has collected stamps since he was a child.

2.  I am working tomorrow, so we can not go somewhere.

3. They are going back to England in two months.

4.  TV is bringing not only information but also entertainment. 

5.  At home on the farm life is always a struggle with nature.