Ex1: Hoàn thành những câu sau với động từ khuyết thiếu should hoặc shouldnt. 1. You ________stay up too late because its not good for your health. 2. No one ________ be late for school tomorrow because we will have an exam. 3. I think there _________ a garbage dump in front of the restaurant. 4. You ___________ go for a check-up regularly. 5. I think you _________ be more tactful. 6. __________you have any questions, please write me an email. 7. What ____________ I do to learn better? 8. My father thinks that I __________be so into computer games. 9. The candidates_________ be here before 10am, or they will be disqualified. 10. You _______learn about some cultural features of the country you are going to visit. 11. Mary ___________take any pills before seeing the doctor. 12. __________James apply for the job at this company? Yes, he should. 13. How much time __________ I spend on this task? 14. Old people _______work too hard. They need an abundance of time to relax. 15. Parents_________ let their children expose to smartphones at an early age.