請幫我改這幾句英文(好簡單的)

The class has less than 80 students.
課室里少於８０個學生．

The value of the house is ten million dollars.(value=價值)
這間屋價值一千萬．

This car is more than ten years old.
這架車多於１０歲．

The class has no less than 80 students.
這個課室不少於８０個學生

The boy is worse than naught.(This one is right!)
這個男仔太頑皮了

I hope this can help you with!

The class is less than 80 students
課室里少於８０個學生．
There are less than 80 students in the classroom.

The house cost is more or less ten million.
這間屋價值一千萬．
The house is worth ten million dollars

This car is ten years or more
這架車多於１０歲．
The car has been more than 10 years.

The class is no less than 80 students
這個課室不少於８０個學生
There are not less than 80 students in the classroom.

The boy is worse than naught.
這個男仔太頑皮了
The boy is too naughty.

1. There is less than 80 students in the classroom.

2. This house costs about ten million.

3. This car has been used for more than 10 years.

4. This class is not less than 80 students.

5. This boy is very naughty.

"The class is less than 80 students"
好似no problem....

"The house cost is more or less ten million."
應係The house is costed more or less ten million.

"This car is ten years or more"
應係This car is more than or over ten years.

"The class is no less than 80 students"
應係The class is not less than 80 students.

The boy is worse than naught.
應係The boy is very naught.

課室里少於８０個學生．
The students in the classroom is less than 80.

這間屋價值一千萬．
The house cost is ten million.

這架車多於１０歲．
This car is ten or more years.

這個課室不少於８０個學生
The students in the class is more that 80 students.

這個男仔太頑皮了
The boy is worse as naught.