... relax 8. B. working 9. A. to be 10. A. to takeII. 1. working 2. learning 3. to take 4. helping 5. playing 6. not to cry 7. operating 8. to bring 9. to switch off 10. to use……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… ... classroom.10. Teacher to students: You are not allowed___________ this door.Key: I. 1. A. to use 2. A. to give 3. B. working 4. A. improve / to improve 5. A. to get 6. B. taking 7. A. to relax 8. B. ... was very sad. When talking to me, she tries_____.7. Why did your uncle stop______________ his business?8. Don’t forget_____ your dictionary to our English class tomorrow.9. Remember_______...