【正文】
e can say “Thank you”, “ Excuse me, … ? ” , or “Could you please… ? ” as often as possible. Then, we should cross the road when the traffic _________ ______ ___ _________ ______ ___ _________ ____________ ______ ___ _________ ______ ___ _________ ____________ ______ ___ _________ ______ ___ _________ ____________ ______ ___ _________ ______ ___ _________ ____________ ______ ___ _________ ______ ___ _________ ____________ ______ _ __ _______ __ ______ ___ _______ __ ____________ ______ ___ _________ ______ ___ _________ ___ light is green. Third, please don39。t step on the grass or pick flowers. Do remember no matter where we go, be sure not to throw litter everywhere. What39。s more, we shouldn39。t speak loudly in public. It39。s our duty to do what we can to make our city more beautiful. I believe if everyone makes an effort,Xining will be one of the most beautiful cities in our country.