Need. 1 … I take this book for a little while? - I am sorry, but I … return it to the library at once. 2. Alec … practise this sound specially, but the other pupils … not: they all pronounce it properly. 3. They … come any time they like between ten and twelve in the morning, but they … not come if they don't want to. 4. … I go there right now? - Yes, you … 5. … we hand in our compositions tomorrow? -- No, you … not, you … hand them in after Sunday. 6. … John really do this today? -- No, he … not, he … do it tomorrow if he likes. 7. You … not let this cup fall: it … break. 8. … I help you with your coat? 9. You … park your car only in your own space in the back of the building. 10. Peter … return the book to the library. We all want to read it. 11. Why … not you understand it? It is so easy. 12. … we do the exercise at once? Yes, you … do it at once. 13. … you pronounce this sound? 14 … I take your pen? -- Yes, please. 15. We … not carry the bookcase upstairs: it is too heavy. 16. We … not carry the bookcase upstairs ourselves: the workers will come and do it. 17. When … you come to see us? --- I … come only on Sunday. 18. Shall I write a letter to him? -- No, you … not, it is not necessary. 19.You … cut anything without a knife. 20. He … not drink alcohol when he drives. 21. Don't worry! I … change a light bulb. 22. By the end of the week I … have finished writing my book. 23 What … we see on this map? 24. … you speak Spanish? -- No, unfortunately I … . 25. At what time … you come to school? 26. … I come in? 27. You … not smoke here. 28. … I take your book? - I am afraid not: I need it. 29. He … not speak English yet. 30. I have very little time: I … go. 31. They … not go to the park today because they are busy. 32. You … read this text: it is easy enough. 33. She … still live in Paris

Certainly! Here is the correctly filled-in version of your exercise with appropriate usage of "must", "may", "can", "should", "ought to", and "will": 1. I take this book for a little while? - I am sorry, but I **must** return it to the library at once. 2. Alec **must** practise this sound specially, but the other pupils **need not**: they all pronounce it properly. 3. They **may** come any time they like between ten and twelve in the morning, but they **need not** come if they don't want to. 4. **May** I go there right now? - Yes, you **may**. 5. **Should** we hand in our compositions tomorrow? -- No, you **must** not, you **should** hand them in after Sunday. 6. **Must** John really do this today? -- No, he **need not**, he **can** do it tomorrow if he likes. 7. You **must not** let this cup fall: it **will** break. 8. **May** I help you with your coat? 9. You **must** park your car only in your own space in the back of the building. 10. Peter **must** return the book to the library. We all want to read it. 11. Why **can** not you understand it? It is so easy. 12. **Shall** we do the exercise at once? Yes, you **must** do it at once. 13. **Can** you pronounce this sound? 14. **May** I take your pen? -- Yes, please. 15. We **must not** carry the bookcase upstairs: it is too heavy. 16. We **must not** carry the bookcase upstairs ourselves: the workers will come and do it. 17. When **will** you come to see us? --- I **can** come only on Sunday. 18. Shall I write a letter to him? -- No, you **must** not, it is not necessary. 19. You **must** not** cut anything without a knife. 20. He **must not** drink alcohol when he drives. 21. Don't worry! I **can** change a light bulb. 22. By the end of the week I **shall** have finished writing my book. 23. What **can** we see on this map? 24. **Can** you speak Spanish? -- No, unfortunately I **cannot**. 25. At what time **do** you come to school? 26. **May** I come in? 27. You **must** not** smoke here. 28. **May** I take your book? - I am afraid not: I need it. 29. He **cannot** speak English yet. 30. I have very little time: I **must** go. 31. They **need not** go to the park today because they are busy. 32. You **must** read this text: it is easy enough. 33. She **still** lives in Paris. Let me know if you'd like any explanations or further assistance!