13. Our bad living habits will destroy the earth. Only by changing ________we live can we save the earth.

Are you a member of the club — It’s years since I

Mum, I’ve heard that we can’t eat ____ these days. Is it true—Take it easy. It is safe to eat cooked meat.

Your spoken English is much better now.– Thanks. Our English teacher often asks me ______ English as ____ as I can.

How do you like Beijing, Miss Read—I’ve no idea. I _____ there.