I have lost my keys; I can't remember where I left it.这句话为什么去掉it

How t____!I lost my keys. I lost my keys ,I have ___(looked,looked for,found,founf out) it everywhere I have lost my keys; I can't remember where I left it.这句话为什么去掉it i can't go home now because i _ my keys A,lost B,don't lose C,have lost D,will lost Where is my keys?I___________it.A.might lose B.would have lost C.should have lost D.must have lost I lost a s_______of keys. I find my lost keys.改为一般疑问句Do you （） （） lost krys. I have been (looking for) my lost keys,but I haven't found them till now括号中为什么要用looking for I lost my keys in the playground.Please help me6个单词I lost my keys in the playground.Please help me（）for it My keys are lost.(改为反义句) 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? I lost my keys ,L ,rose found it and gave it to me I lost my keys ,L什么,rose found it and gave it to me I lost a set ___ keys on my way to school中间填什么