Write the following sentences using must, mustn't, or needn't, as in the example. 1. It's not permitted to walk on the grass. You mustn't walk on the grass. 2. It is necessary for John to renew his passport. 3. It is forbidden to park your car here. 4. It isn't necessary for you to come along if you don't want to. 5. He's obliged to be at work at six o'clock in the morning. 6. It is forbidden to take photos in the museum. 7. It is your duty to protect the environment. 8. You aren't allowed to use a dictionary during the exam.

2. John must renew his passport. 3. You mustn't park your car here. 4. You needn't come along if you don't want to. 5. He must be at work at six o'clock in the morning. 6. You mustn't take photos in the museum. 7. You must protect the environment. 8. You mustn't use a dictionary during the exam. Объяснение: 2. 'It is necessary' означает необходимость, поэтому используем 'must'. 3. 'It is forbidden' означает запрет, поэтому используем 'mustn't'. 4. 'It isn't necessary' означает отсутствие необходимости, поэтому используем 'needn't'. 5. 'He's obliged' означает обязанность, поэтому используем 'must'. 6. 'It is forbidden' означает запрет, поэтому используем 'mustn't'. 7. 'It is your duty' означает обязанность, поэтому используем 'must'. 8. 'You aren't allowed' означает запрет, поэтому используем 'mustn't'.