Koock at the door before enter the room 中enter要不要变形?

Koock at the door before enter the room 中enter要不要变形? at that time door will be open just push the If you -----at home,please lock the door.(be) Someone is knocking at the door,but who can____ be? I'll be waiting for you at the door. who can it be at the door?准确翻译 Wolf At The Door 歌词 knock at the door造句 Wendys at the classroom door . no cover at the door at the door 的意思 at the dear's door Someone is knocking at the door._must be TomSomeone is knocking at the door._must be Tom A.that B.It C.He D.This There is someone knocking at the door.It may ________ (be) the postman.如题 someone is knocking at the door.It might be the posyman.为什么用is knocking at the front door和at front door的区别 someone is knocking at the door.who [ ]it be?A;mustB;canCmayD;shall必须有理由 Is Lucy knocking at the door?No.It _____ be Lucy.She is in Japan now.