Complete these sentences with should/ shouldn't.
1. It's cold. You should/ shouldn't wear a cardigan.
2. She's always tired. She should/ shouldn't go to bed late every night.
3. You should/ shouldn't eat some fruit or vegetables every day.
4. You should/ shouldn't ask the teacher to help you if you don't understand the lesson.
5. We should/ shouldn't miss the trip to Ha Long Bay next week. I have heard it's fantastic!