-Leave the windows open.-______.
—Are these books ________?—No, they are not mine. They belong to _______ .
—What can I do for you?—I want _______ iPad for my son. He needs _______.
—Would you like to watch the TV program A Bite of China with me?— , but I’m busy reviewing for my test.
It’s said that of the water around the world ________ polluted.
I think health is than wealth.