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.