_______ you have seen the film for three times, you must know something about the hero.
A.AlthoughB.Since
C.UnlessD.When
You had better _______ with her about the colour and the size of the furniture.
A.discussedB.discussing
C.to discussD.discuss
I didn’t hear anyone knocking at the door because I _______ to music in my room.
A.was listening B.listened
C.have listenedD.am listening
“I’m sorry that you’ve missed the last bus. It _______ only five minutes ago.” said the man.
A.has leftB.had left
C.would leave D.left
She shouted with friends and then stood up _______ she could see the film stars clearly.
A.in orderB.as
C.such asD.so that
Every day students in our school will do outdoor activities ______ there is a heavy haze(雾霾).
A.unlessB.while
C.untilD.since
