1) In the summer, you .......... wear a hat when you are out in the sun. a) must b) mustn't 2) You ...... listen carefully to the safety rules before you go rock climbing.  a) must b) mustn't 3) You ......... feed the goldfish in the lake. Look at the sign.  a) must b) mustn't 4) Football players ......... touch the ball with their hands. a) must b) mustn't 5) Zoe ......... run round the swimming pool. It's dangerous. a) must b) mustn't 6) People .......... throw batteries in the rubbish bins at home.  a) must b) mustn't 7) People ......... recycle batteries. a) must b) mustn't

Complete with must or mustn't

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