EX1: Complete these sentence with tag question (CÂU HỎI ĐUÔI) 1. She has many books,___________? 2. Noone is in the room,___________? 3. Peter has bought his car,_________? 4. They hardly go to school late,________? 5. We must sweep the floor everyday_________? 6. I am a student at university,___________? 7. Let's go out for lunch,__________? 8. Don't be worry about your children,__________? 9. Be quick or you''II be late for the train___________? 10. They sometimes take part in picnic_________?