My uncle is really busy. He_____comes to our home these days.

---Have you read today's morning paper? ---Not _______. What's the latest news?

---Excuse me , would you please speak a little more ____?---Sorry, I thought you could follow me.

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

She is Japanese, but she can speak ________ Chinese.