–What’s the price of iphone4S these days? --It is much ____. You may go and buy one.

---Ann, I’m worried I’m getting fatter. What shall I do?---I think you should eat          food and do more exercise.

I hope there will be ____ cars and ____ pollution in the future, thus people will live longer.

Who is _____ swimming, you or she?

—What’s the low-carbon life style like? --Save_______ energy, produce ________ carbon.