3.a) Complete the sentences with should or shouldn’t.
1. Students _____ switch off their mobile phones during the lesson .
2. You ______ eat a lot of fruit and vegetables if you want to be healthy.
3. He ______ carry a tablet in his schoolbag. It distract him from his studies .
4.You _______ leave your bag on chair in public places.
5. She has a cold. She _______ stay at home and take medicine.
6. What ______ I do about the broken vase?
7. Children_____ talk to strangers in the street.
8. We _____drink a lot of water in hot weather.
9. You________ take anything valuable when you go swimming.
10. -I dont know how to a make a pie.
-You _______find an easy recipe and follow it step by step.