1. Smoking is not allowed in the hospital (must)
=> You
2. It isn’t necessary for you to book the tickets (have to)
=> You
3. You are not allowed to park here (must)
=> You
4. It is better for parents to take time to understand their children (better)
=> Parents had
1. You mustn’t smoke in the hospital.
2. You shouldn’t book the tickets.
3. You mustn’t park here
4. Parents should take time to understand their children.
1. You mustn’t smoke in the hospital.
2. You shouldn’t book the tickets.
3. You mustn’t park here.
4. Parents had better take time do understand their children.