1.How many _______ _______(交通灯)are there in every country?______ ______ (有)there. 2.How are you going?We"re going _______ _______(步行) 3.Do you know the ______ _______(交通规则)? 4._____ you _____(居住) on _____ ______ _____(第五层楼). 5.Can we go nao ao ___ ____?(乘坐火车) No,but we can go____ _____(乘坐轮船)