UNIT 1. IN AND OUT OF SCHOOL » 12

12. Fill in the gaps with “must / mustn't” or “needn't”. 1. I haven't got much time. I must hurry. 2. I have got plenty of time. I needn't hurry. 3. "Do you want me to wait for you?" — "No, it's okay. You needn't wait.” 4. Smith gave me a letter to post. I mustn’t forget to post it. 5. You needn’t come if you don't want to but I hope you will. 6. We have enough food at home so we needn’t go shopping today. 7. This book is very valuable. You must look after it very carefully and you mustn’t lose it. 8. You have got a new skirt, so you needn’t buy another. 9. It's holiday tomorrow. You needn’t get up early. 10. He's ill, so he must see the doctor. 11. It's snowing. You must put on your coat. 12. You mustn’t take too many aspirins in one day.