Emily always (interrupt) me. it (drive) me mad. i (not know) why i (call) her my best friend. at the moment i (try) to explain this rule to my friend, but she ( not understand). watch out! it's our director - he (see) us?

Emily always interrupts me. It drives me mad. I do not know why I call her my best friend.At the moment I am trying to explain this rule to my friend, but she does not understand. 
Watch out! It's our director -  Does he see us?