Exercise : 1. She washed the tubes in the laboratory, .......................? 2. Jack won’t take that course, ........................? 3. Something is in her eye, ..........................? 4. His parents didn’t allow him to go out, .......................? 5. Don’t stand in the rain, ……………….? 6. No one likes her, ........................? 7. The students looked bored in the class, .........................? 8. The cat has caught five mice, …………….........? 9. Susan ought to iron her clothes, ...........................? 10. Mike and Kathy can’t lift that case, ........................? 11. Nothing can affect his work, .....................? 12. The worm destroyed that flower last night, ..............................? 13. Ann doesn’t do her duty today, ..........................? 14. Someone telephoned me this afternoon, ..........................? 15. Mr Smith never smokes cigars, .........................? 16. Everything looks tasty, ...............................? 17. They shouldn’t tease that dog, .............................? 18. The questions were very difficult, ..........................? 19. We mustn’t abuse drug, ...............................? 20. Let’s play football now, ...............................?