Unit 4 - Grammar

My dentist said that I _____________ neglect brushing my teeth. a. must - b. mustn't - c. have to - d. don't have to

The entrance is free of charge, so you __________________ buy a ticket. a. must - b. mustn't - c. have to - d. don't have to

You _________ sleep late today, you have an important meeting in the morning. a.must - b. mustn't - c. have to - d. don’t have to

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