People sleep very little and feel tired., People have to sleep at least 7-8 hours every night., People must sleep at least 7-8 hours every night., Some people think exercise is very difficult., People mustn’t go to gym. They can just walk every day., People don’t have to go to gym. They can just walk every day., Tourists don’t know local rules., They must learn basic rules before they travel., They have to learn basic, People eat to much fast food., They must try to cook more healthy food at home., They have to try to cook more healthy food at home., People are stressed because they work to much., People mustn’t forget to rest., People don’t have forget to rest.,  People smoke in restaurants and cafes., People mustn’t smoke inside the buildings., People don’t have to smoke.

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