When she saw the beautiful city, she loved it and decided ______there.
Mr. Smith lives ____ that building. His house is ____ the fifth floor.
We will never forget what happened ____ the afternoon of May 12, 2008.
It’s very kind ____ them to pick me up at the railway station and drive me home.
–What do you often do ____ classes to relax yourself? –Listen to music.
We looked at each other ____ surprise when we heard a bird singing “Happy birthday to you”.