the key to the bike is missing

the key to the bike is missing the key to the door is missing THE MISSING KEY怎么样 The key opens the room is missing.哪错了? Maybe the key to the bike is in the desk同意句转换 the key of his bike 还是the key to hie bike to的用法~如：This is the key to my bike . Here is the key to the LOVE IS THE KEY TO THE WORLD Is my key to the bike in the box? I don't () so. It may be i the key to the what is the key to happiness?