David asked______ in China.—– Of course not. Chinese usually shake hands with a lady as a greeting.

You look so worried, what’s wrong -More andmore people like me begin to worry about the ______ pollution after the haze (雾霾) appeared in Beijing and some other cities in China.

In my opinion, there’s no greater happiness than of succeeding in one’s career.

－Why does Joe look so today－Because she has got an “A”in her English test.

Tom made a fire_________ us _________ warm yesterday.