Lily didn’t ask her father to buy a car for her;         , she bought one for him!

—Can you see the man ________？
—Yes, I can.He is my neighbor Mr Smith,  who is difficult to get along with beca
use he always keeps everyone ________.

A clean environment can help the city bid for the Olympics，which ________ will promote its economic development.

________ conclusion，I'd like to say that I believe him.I'm convinced ________ his honesty.

People try to avoid public transportation delays by using their own cars, and this
________creates further problems.(2007· 湖北)

I guess we've already talked about this before but I'll ask you again just
________.(2010·浙江)

Mr.Smith, there's a man at the front door who says he has news for you ________
vital importance.

A meeting of the World Heritage Committee agreed ________ a list of places in the world which had ________ cultural importance or unique natural beauty.

I've decided to keep all these stamps as they might be ________ some day.(2012·天
津联考)

—May I borrow your computer?
—Sorry, it is ________ at the moment.