Correct: You can't smoke in this area., People working in hospitals have to wear uniforms., We must finish the work today. The boss won't wait., You mustn't talk on your phone and drive at the same time. , Is it true that we don't have to go to school until 11 am tomorrow?, Incorrect: You must wait here. Please move to the waiting room., You mustn't tell him. He already knows., Teachers can't wear a suit to work but they usually choose to wear nice clothes., Annie don't have to do the English test because she's half Australian., You need to come to the office. You can work from home.,

V2, Modal verbs: obligation + permission - Unit 6 recap

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