1. You should look people in the eye when you speak.
2. Students shouldn’t interrupt the teacher.
3. Young children shouldn’t stay home alone.
4. Tourists should learn the customs of other countries.
5. In India, you shouldn’t use your left hand to eat.
6. You shouldn’t worry too much about your trip.
7. Customers shouldn’t use cell phones.
8. You shouldn’t wear shorts to a wedding.