Tom is my friend. I’m in Class Three with ______ .

This is my good friend. _________ name is Linda.

——Do you know the man wearing a pair of glasses?-------Yes.He’s a teacher of _________.He teaches _________history.

I have more paper clips than____    ___, but my CDs are fewer than_____  ___.

—How about the pollution in the countryside?—Luckily, it's not as serious as _______ in the big cities.