Your father is ________ a meeting.

What happened _____ the poor girl?

Wei Fang is young，but she plays ping-pong ____ her mother.

I have a globe ____  a monster in it.

Sally has been swimming ______ four hours.   

I had a really hard time _____studying science this term.

--- Excuse me, where is the nearest hospital?
--- Go _______the road, then turn left _______the first turning.

It’s snowing heavily, so there is a lot of snow all ______ the ground.

Lu Xun(鲁迅)was famous ______ a writer.

There is a big tree ______ the house.