passing planes can be heard night and day.You_______them all

passing planes can be heard night and day passing planes can be heard night and day 中的passing 什么词性 为什么 Passing plane can be heard night and day. I live near an airport and passing planes can be heard night all day and night还是all day and all night all day and all night与day and night 辨析 猜一个英语谜语：What has no legs,but can walk all day and all night? what has no legs ,but can walk all day and all night ? 猜谜语 whath has no legs,but can walk all day and all night?it' 英语谜语问：What has no legs,but can walk all day and all night? What has no legs ,but can walk all day and all night?的意思是什么 英语谜语What has no legs,but can walk all day and all night?it i