.I was supposed ___ at 7:00 ,but I arrived at 8:00.
--- How _____ hours do you sleep a day? --- Well, about eight hours. But how _____ sleep do we students really need?
--- Must I do the rest of the work today? --- No. You _________finish it tomorrow.
--- Do you know Shenzhou X is flying in space? --- exciting news!
--- Which of the following words has the same sound as the “ed” in the word “danced”? --- Let me see. That’s .
--- Excuse me, is there ____ book by Mo Yan? ---Yes, it’s on _____ bookshelf over there.