John seemed puzzled about _____ the question meant.

The first decade of the 21st century _____the breathtaking and non-stop development of China.

Can you tell me where to spend your winter holiday—I’m not sure. We go to Yangzhou.

Life is boring without money.— Perhaps, but money doesn’t mean , I think.

My parents ________ in Hong KongThey were born there and have never lived anywhere else