1) When riding your bike, you ______ forget to wear your helmet. a) must b) must not c) should 2) Before crossing the street, you ______ look both ways. a) must b) must not c) should 3) You ______ ride your bike on the sidewalk. a) must b) must not c) should 4) When approaching a red traffic light, you ______ stop. a) must b) must not c) should 5) At night, you ______ wear reflective clothing while riding your bike. a) must b) must not c) should 6) You ______ ride against the flow of traffic. a) must b) must not c) should 7) Before turning left on your bike, you ______ signal with your arm. a) must b) must not c) should 8) When riding in a group, you ______ follow the rules of the road. a) must b) must not c) should 9) You ______ ride too close to parked cars. a) must b) must not c) should 10) Before riding your bike, you ______ check that your brakes are working properly. a) must b) must not c) should

Must and must not

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