I forget to bring the key with me, so I can not open the doo

I forget to bring the key with me, so I can not open the doo I can't open the door with this key.Why not( )it with anothe I forget ___ my ruler with me ,Can you use yours?该填 to bring Sorry,I can't open the door,for I ( ) the key to it. what did you say just now?i asked---A.how i can open the doo You're the key to me ,open up the heart and you will see ,I' sorry,I can't open the door,for I__the key to it,为什么答案是lost, I can't open the door,for I___the key to it Do not forget the book i told you to bring?空格处可否用which -I remained you not to forget the appoinment.-so do i 还是so d Don't forget to bring me a-------.I'll post the letter. A.bo 选donot forget to bring me a ----.i will post the letter 1\ca