Emily always (interrupt) me. It (drive) me mad. I (not know) why I (call) her my best friend. At the moment I (try) to

Emily is always interrupting me. It drives me mad. I don\'t know why I call her my best friend. At the moment I\'m trying to explain this rule to my friend, but she does not understand. Watch out! It\'s our director/ headteacher (headmaster)/ principal - Does he see us?