----Does Ann like playing basketball?----No, she doesn’t. She _____plays sports.

He has        work to do, so he can’t go with you.

—What’s the weather like outside?—It’s raining heavily . You’d better not go out.

-- Is air the lightest thing in the world?-- Not            . Scientists from Zhejiang University have just developed the world’s lightest material.

 ---George, how can you prove the earth is round?---I can’t, sir. ______, I never said it was.