1) You ___________ wear a crash helmet on a motorbike. a) must b) mustn't 2) You _________ turn the left. a) must b) mustn't 3) You __________ cross the road when you see the red man at a pedestrian crossing.  a) must b) mustn't 4) You _________ cycle in a cycle lane. a) must b) mustn't 5) You _________ wait for the green man at a pedestrian crossing.  a) must b) mustn't 6) You __________ enter the street with this sign. a) must b) mustn't

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