Помогите пожалуйста Упражнение 2. Сделайте данные предложения, в которых есть модальные...

Помогите пожалуйста
Упражнение 2. Сделайте данные предложения, в которых есть модальные глаголы, отрицательными.

You must read in bed.
You can cross the road when the lights are red.
You should open the window. It is cold outside.
It is already late. She must go outside.
He should dress so formal if he goes to a picnic.
You must keep books at home so long.
You can park here.
Students may shout at the lessons.
Teachers may be late for school.
Parents must obey their children. (obey — слушаться)

You must not read in bed.
You cannot cross the when the lights are red .
You shouldn't open the window. It is cold outside.
It is already late. She must not go outside.
He shouldn't dress so formal if he goes to a picnic.
You must not keep books at home so long .
You cannot park here.
Students may not shout at the lessons.
Teachers may not be late for school. .
Parents must not obey their children.