i must have lost my key~不用have行不?

i must have lost my key~不用have行不? I lost my pencil. I must look for one改错 I have never lost my heart i have lost my heart for you? Time (Have I Lost My Mind?) 歌词 I have lost my new English dictionary have i lost my faith in you? Where is my keys?I___________it.A.might lose B.would have lost C.should have lost D.must have lost Where is my pen?I_____it A.might lose B.would have lost C.should have lost D.must have lost I must have lost them probably about half way through Where is my pen?I _____ it.A.might loseB.would have lostC.should have lostD.must have lost选择原因? 英语翻译in my place,in my place were lines that i couldn't change i was lost,oh yeah i was lost,i was lost crossed lines i shouldn't have crossed i was lost,oh yeah yeah,how long must you wait for it?yeah,how long must you pay for it?yeah,how lon I can't find the key to my office,I( )have lost it on my way homeA would B should C must D ought to I have lost my self.这里的have如何解释? I Must Have Left My Heart 歌词 i have lost my wallet和i lost my wallet有什么区别呀 I lost my wallet和I have lost my wallet 意思上有什么区别 I have lost my life since I met you.