There are many books_____our school library. [ ]

Wow! These inventions are amazing．—They were all invented _______years ago.

It is said that the famous football star is now willing to play for_____ would pay him three million dollars a year.

I’m thirsty, Steven. Please pass ____ a bottle of water.

If you sit in a chair _____ a long time, your back may begin to hurt. [ ]