The baseball is _____ the floor _____ the desk.[ ]

Have you ever been to theSports Center ____ is just opened in town?—No, notyet.[ ]

If I am free, I’d like to spend _________ holiday in the countryside.

We can go to Beijing Railway Station by bus. — Why not ______ there for a change? [ ]

We are inschool. Our English teacher is Mr. Li.