1) 1. You ______ see a doctor. a) must b) mustn't 2) 8. You __________ put litter in the garbage can. a) must b) mustn't 3) 3. You _________ be late for school a) must b) mustn't 4) 4. You ______ eat fruit and vegetables. a) must b) mustn't 5) 5. You ________ eat fast food too often a) must b) mustn't 6) 6. You _________ do your homework a) must b) mustn't 7) 7. You ____________ watch TV a lot a) must b) mustn't 8) 9. We __________ be polite to our teachers a) must b) mustn't 9) 10. We __________ talk loudly in the library. a) must b) mustn't 10) 10. We __________ take photos here. a) must b) mustn't

Look 3 - Unit 8 - Grammar - Must/Mustn't

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