1. How long are you teaching at that school ?

→ How long have you teached at that school ?

2. Tourists usually have a bus to the countryside .

→ 2. Tourists usually have buses to the countryside .

3. What about go to the department store with me ?

→ What about going to the department store with me ?

4, I prefer go by train . It is much more comfortable .

→ I prefer to go by train . It is more comfortable .

5, I teach English here since I graduated from university .

→ I have teached English here since I graduated from university .

6, 6. If I was her , I would go to the circus with them .

→ If i were her , I would go to the circus with them .

7, You needn't to worry about meeting me at the station , I'll get a taxi .

→ You don't need to worry about meeting me at the station , i'll get a taxi .

8, My teacher makes me to do all these exercises .

→ My teacher makes me do all these exercises .

9, If I would have known , I could have helped you .

→ If I have known , I could have helped you .

10, He didn't used to behave like that , but now he is rude .

→ He didn't use to behave like that , but now he is rude .

11, They never visited London before their first visit in 1987.

→ They have never visited London before their first visit in 1987.

12, Wearing uniform helps students feel equally in many ways .

→ Wearing uniform helps students feel equal in many ways .

13, Uniforms encourage students to be pride of the school they are going to.

→ Uniforms encourage students to be pride in the school they are going to.

1.are you teaching > have you been teaching

2. a bus > buses

3. go > going

4. go by > to go by

5. I teach English > I have been teaching

6. would > will

7. needn't > don't need
8. makes > wants

9. could > would

10. used > use

11.      (hình như câu 11 đúng)

12. equally > equal

13. pride > proud