Choose the correct options

1. You
   [should|shouldn't]
   add more pepper to the soup. It's spicy enough.
2. I think you
   [should|shouldn't] study hard. This exam is really important.
3. You
   [should|shouldn't] talk when your mouth is full.
4. You
   [should|shouldn't] look all new words up in a dictionary.
5. They
   [should|shouldn't] stay at home today. It is raining heavily.
6. He
   [should|shouldn't] talk like this to the teacher. It is rude.
7. You
   [should|shouldn't] eat a lot of fast food. It is unhealthy.