The physics teacher said that light _______ much faster than sound.

Though all of us hate Chinese style road crossing, there are still ______ people crossing the road when traffic lights are red in Yancheng. It must be changed.

The song I Believe I Can Fly tells us that believing in _______ is very important.

Li Na plays____________ tennis very well. She has become _____________first Asian woman to reach a Grand Slam(大满贯) final.

It’s very friendly_ him to help me when I’m in trouble.[ ]