1. I'm not the best in the class.

2. Mark doesn't do homework in the evening. 

3. We don't play football after school.

4. You don't run fast.

5. Lim and Lucas don't work at weekends. 

6. I don't like classical music.

7. These exercises aren't difficult.

8. She doesn't have science on Fridays.

VIII.

1.I am not the best in class.

2.Mark does not do this homework in the evening.

3.We do not play footbal after school.

4.You do not run fast.

5. Lim and Lucas don't work at weekends.

6. I don't like classical music.

7.These exercises are not / aren't difficult.

8. She doesn't have science on Fridays.

Cho xin ctlhn