—Do you mind if I open the window?—____I feel a bit cold
He had decided to give it up, but on ______ second thought, he decided to try ____ 3rd time.
What does it ________ if I spend $ 100 on it ---it’s my money.
More and more people choose to shop in a supermarket as it offers a great _____ of goods.
Mr. Wang has been selected_________ chairman of the conference.
Paper-making began in China and from here it ________ to North Africa and Europe.