It is bad manners to s____ your legs while eating.
请把下面排错乱的句子整理成一段通顺的话,括号里写上序号。
____忽然,他看见一个小孩子跌到了。
____小孩子说:“谢谢你,哥哥。”
____有一天,小明去上学,走在马路上。
____小明连忙跑过去,把小孩子扶起来。
我们对待毒品的态度正确的是( )
The chief engineer of the high-speed railway ________ Shanghai to Beijing always devotes most of his time ________ his work.