—look! It’s raining _________.—That’s great. It’s too hot these days.

 —M r Smith, would you please speak a little more ________?—Sorry ! I thought you could follow me.

He didn’t listen to the teacher carefully.       , he couldn’t answer those questions.

Jack likes doing kung fu on weekends. Mike        likes it.

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