1) The students _ go to bed at 10 o'clock. a) must b) mustn't 2) The students _ read books every day. a) must b) mustn't 3) The students _ watch video late at night. a) must b) mustn't 4) The students _ have a shower every day. a) must b) mustn't 5) The students _ be late for school. a) must b) mustn't 6) The students _ talk in class. a) must b) mustn't

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