cross和across有什么区别（When is the road is clear,it is safe to----it.是填cross还是across)

across和cross有什么区别? across和cross和go cross有什么区别 英语中across和cross 有什么区别 go across和cross有什么区别吗?帮个忙 across与cross有什么区别? cross,across,through有什么区别 through pass cross across有什么区别? though、cross、across、over有什么区别? across和cross有啥区别? cross的用法cross与across有什么区别 cross 和 across 的区别 across 和cross的区别? through和cross,across区别 across和cross,around和round有什么区别?有什么用法? 谁能告诉我across,cross,pass,through有什么区别啊另外，died和dead 咋用啊 across from cross through go through pass 有什么区别 cross across这两个词有什么区别,大家帮帮忙 .though、cross、across、over有什么区别?快