标签：英语四级试题下载,大学英语四级试题,英语四级真题下载,, 2017英语四级考试试题完型填空练习题库(9),
Henry's job was to examine vehicles which crossed the frontier to make sure that they were not smuggling anything into the country.Every evening -1- at weekends,he would see a factory worker coming up the hill towards the frontier,-2- a bike with a big load of straw on it.When the bike -3- the frontier,Henry used to stop the man and -4- him， 大小：582 KB