--- Are you going to buy a camera ? --- Yes. But there’re so many kinds that I can’t decide ____ to buy.
---Have a nice day.
These shorts are on sale.They are____25 yuan each.
They put their books____to make the library clean and tidy.
There____some bread. Would you like to try it?
My father lost ____keys. Now he can’t get into the house, the office or the garage (车库).