1) We _______ protect our planet or we will destroy it. a) MUST b) MUSTN'T c) DON'T HAVE TO 2) She ________ do her homework today. She can do it at the weekend.  a) MUST b) MUSTN'T c) DOESN'T HAVE TO 3) Our cat ___________ leave the house or it would run away. a) MUST b) MUSTN'T c) DOESN'T HAVE TO 4) A: Are you coming to the party? B: No, I can't. I ___________ go to sleep early today. a) MUST b) MUSTN'T c) DON'T HAVE TO 5) Students ___________ cheat during tests. a) MUST b) MUSTN'T c) DON'T HAVE TO 6) I _______ be a mistake. I don't know this man. a) MUST b) MUSTN'T c) DON'T HAVE TO 7) It's a secret. You __________ tell anyone! a) MUST b) MUSTN'T c) DON'T HAVE TO 8) My father ___________ get up early. He works as a bartender. a) MUST b) MUSTN'T c) DOESN'T HAVE TO 9) He __________ clean the house. His mum cleaned it yesterday. a) MUST b) MUSTN'T c) DOESN'T HAVE TO 10) We __________ listen to our teacher when she speaks. a) MUST b) MUSTN'T c) DON'T HAVE TO

must, mustn't, don't have to

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