— Which do you think is ______ subject, math, music or art?[— Art, I guess.
---How many birds can you see in the trees? ---I can see ___birds in them.
---____will he come back from Kunming? ---In a week.
There _____a football game between China and Japan tomorrow evening.
---Where are you going to move ? ---I’m going to move______.
The ______ you study, the ______ grades you will get.