leave before 7 o’clock,or you will miss the train.为什么用leave?不用leaving?

leave before 7 o’clock,or you will miss the train.为什么用leave?不用leaving? Before You Leave 歌词 Don't leave me before I leave I leave shool at 7 oclock中文是什么意思? Come Back (Before You Leave) 歌词 If You Leave Before Me 歌词 I didn't ____ you are going to leave ____ 3 o'clock.a.find;until b.remember;before为什么不能选b? ClO+O→Cl+O2 反应类型和机理 英语翻译buses leave the Railway Station 20 minutes before and after every half hour from 6 a.m to 1o pm all tickets must be bought at the station Windoe BEFORE boarding buses my parents are promised to come to see me before i __{leave} for Africa.讲明理由O(∩_∩)O谢谢 my parents are promised to come to see me before i __（填空）{leave} for Africa.题目没有问题 英语翻译明天我们将会跟他说再见在他早上8点钟离开之前.译成：Tomorrow we will say goodbye to him before he leave at eight o'clock in the morning.还是：Tomorrow we will say goodbye to him before he'll leave at eight o'clock 英语翻译I ______ ______you _____ before I leave home. 英语翻译 Be sure to leave before he came back. please call me before leave 这句子对吗 ---------(close)the windows before you leave the classrom. Be ----to close the windows before you leave. I____(close)the windows before I leave.动词填空 I have finished my homework before I ______(leave).