1. You should\shouldn’t eat vegetables. They are healthy. 2. It is very cold. It may not \ might snow tonight.
3. That dress looks small. It shouldn’t\ might not fit you.
4. I am very busy today. I may not\ should have time to see you.
5. My room is a mess. I should\shouldn’t clean it.
6. It's early. The shop should\ might not be opened yet.