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Rock-climbing is a breathtaking activity, very popular nationwide among young people,
      cooperation as well as courage plays an important role.

I think I have reached the point,    I enjoy seeing the scenery of the city.

I went to shanghai last week,      I visited the World Expo.

Now everyone is concerned about how to conquer the economic crisis, __________is very important for us to preserve our standard of living．

Mark Twin wrote many popular novels in his life, ________ The Adventures of Tom Sawyer is a best example.

Huang yong wasn’t admitted into Qinghua University, _______ made his parents and him disappointed.

He liked to go to dances and parties,     he could have a good time just sitting and watching.

That evening, _____ I will tell you more about later, I ended up working very late.

____is well known, Taiwan is part of China.

Maria has written two novels, both of ________ have been made into television series.