Underline the correct phrase in each sentence. a) why are you waiting/do you waiting outside the door? b) what time go you/ do you go to bed on saturdays? c) don`t ask tim. he doesn`t know/ not knows the answer. d) i having/ i`m having my lunch at the moment. e) when you leave/ do you leave the house in the morning? f) i don`t understand. what is happening/ is happen? g)excuse me, does you know/ do you know the time? h) this is a great party. i`m having/ am having a lovely time.