Before leaving your head down to kiss my hair ends

Before leaving your head down to kiss my hair ends Please turn in your paper before leaving?该句话是什么意思? Please turn in your paper before leaving.中文翻译 keep your windows closed before leaving the room.为什么用“closed”而不用“closing? Before leaving the train,make sure you take all your bags with you的意思? can i change the chinese currency back to us dollars with the receipt before leaving your country.can i change the chinese currency back to us dollars with the receipt before leaving your country. 1.We should make sure that all the windows and doors were ___locked before leaving the house.( safe2.We are _____thankful for all your help.(true) When is your brother leaving home? 为什么是leaving? ____they were leaving ,用before还是as好 Right Before Your Eyes 请问after和before后面的动词要用ing吗?比如after he leaving 或before he leaving leaving leaving leaving 英语翻译If you plan to take your pet on a trip,prepare ahead of time.At least two weeks before you leave,take your pet to a vet.See if he or she is tit for travel and ask if he or she should have any medicine before leaving.The vet may suggest ce do not forget to turn off the lights before leaving the room 为什么是leaving 不是leave before leaving the room,he turned off the radio.这里为什么要用动名词leaving,而不是其原形? clean your hands before meals