-What’s wrong _______ Mary?-She has a headache.
—What’s your hobby?—I _______ listen to music, but now I enjoy dancing.
The old man died _______ a cold snowy night.
He is _______ young _______ to school.
—I think computers are _______ more important than radios.—I don’t agree with you.
I’m if there are UFOs.(飞碟)