Someone is ringing the doorbell . Go and see ____________.

---Warren Buffett is the second wealthiest man in the world . ---He is, but___ doesn’t follow that he lives the most expensive life. Actually, he still lives in an old house that he bought 30 years ago.

Did he find _____ hard to learn a foreign language?

We all feel         our duty to make City of Wenzhou a better place.

Last week, only two people came to look at the house, ____ planning to buy it.