阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格中填入一个适当的词或使用括号中词语的正确形式填空。
It's very important to keep (保持) safe at any time! Many students {#blank#}1{#/blank#} the US always take the school bus to school every day. Parents think that taking the school bus {#blank#}2{#/blank#} (be) very safe. {#blank#}3{#/blank#} sometimes it is also dangerous. Some
students were injured(受伤) {#blank#}4{#/blank#} they didn't follow the school bus rules(规定). {#blank#}5{#/blank#} are the school bus rules?
●Arrive at the bus station {#blank#}6{#/blank#} (early).
●Wait for the bus at the bus station.
●{#blank#}7{#/blank#} (not)play around the bus station.
●Don't run here and there at the bus station.
●Don't walk {#blank#}8{#/blank#} fight on the bus when it is going.
●Don't get off the bus if it doesn't stop.
These rules are {#blank#}9{#/blank#} (good) for students. Remember them and don't break (打破) {#blank#}10{#/blank#} (they). So you can keep yourself safe.
