Am I interrupting

Am I interrupting Tom,I am very sorry for__you when you are busy with your work.A interrupt B interrupting C being interrupted D to interrupt i hate interrupting other people w___they are talking (填while还是when) Circuit-Interrupting Devices during my stay there和Excuse my interrupting 中my的用法,搞不懂,为什么不用I I am I AM I Am I am Am I I am i am i am i am I AM I am i am I am