The government of Chongqing is building ________ cheap and good houses for the people.

Do you know Mozart? — Of course. He wrote _____ of beautiful pieces of music.

people in the world are suffering from the H1N1 flu.

. — What’re you going to do to protect the environment? — Plant trees on side of the river.

Why are you so _______,Amy?—-I thought I lost my purse, but I didn’t. I found it in my study!