EX8: 1. My brothers often sleep on the floor.

2. Does he sometimes stay up late?

3. I always do the housework with my brother.

4. Peter and Mary never come to class on time.

5. Why Johnson always good mark?

EX9: 1. She doesn't sleep late on the weekends.

2. We don't believe ghost.

3.Do you understand the question?

4.They don't work late on Friday.

5.Does David want some coffee?

Exercise 8.

1. My brothers often sleep on the floor.

2. Does he sometimes stay up late?

3. I always do the housework with my brother.

4. Peter and Mary never come to class on time.

5. Why does John always get good marks?

Exercise 9.

1. She doesn't sleep late on weekends.

2. We don't believe in ghost.

3. Do you understand the question?

4. They don't work late on Fridays.

5. Does David want some coffee?