Question

Вставьте mustn't or needn't.
1.You_____play with matches. It's dangerous. 2. You_____talk loudly. The baby is sleeping. 3. I_____go to the bank. I've got some money. 4. We_____stay out late. We have to get up early tomorrow. 5. You _____feed the dog. I'll do it. 6. I _____forget to buy some milk. There isn't any left. 7. You_____talk during the exam. 8. You_____phone Julia. She's coming here later. 9. You _____take your umbrella. It's stopped raining. 10. You_____park here. There's a “No Parking” sign. 11. You_____come with me. I can go alone. 12. You_____lose the key. I haven't got another. 13. You _____tell Sonia. It's a secret. 14. You_____buy a paper. You can read mine. 15. You_____go by taxi. I can give you a lift.

Answer 1

1. mustn't
2. mustn't
3. needn't
4. mustn't
5. needn't
6. mustn't
7. mustn't
8. needn't
9. needn't
10. mustn't
11. needn't
12. mustn't
13. mustn't
14. needn't
15. needn't

Mustn't используем, когда что-то под запретом и этого нельзя делать. Needn't используем, когда что-то можно делать по собственному усмотрению и в этом нет нужды.