I know you were once a athlete on a national track and field team句子中为什么用on而不是用in还是两个都可以

If I were you ,I'd leave at once 谁知道i know you were trouble歌词 I know you were trouble 钢琴谱 I THINKED THAT YOU WERE KNOW I don't know where you were. I know you were frouble是什么意思? Croatia,if you know were it i, I know you were once a athlete on a national track and field team句子中为什么用on而不是用in还是两个都可以 I look you once I know I like you But 我想知道 Hello!I didn’t know you were here. I DONT KNOW WHY YOU WERE LATE FOR SCHOOL AGAIN 求i know you were trouble的空间歌曲链接 I didn't know you were so busy. 英语翻译Once ,doesn't mean anything to me .Come show me the meaning of complete .Once we were so strong .When you told me you loved me ,did you know it would take me the rest of my life ,to get over the feeling of knowing .Baby ,I thought you wer Once you were the girl which I most loves,has in your day I quitehappy,good happy,but you left I,this matter let me receive the verybig attack,each time you and I met I all did not know this and yousaid any was good...Looked like between me and you h 请问：I didn't know it were you.为什么一定要用were呢? i didn't know you were sleeping为什么要用were you were once a friend是什么意思