We should make good use of our spare time .
The teacher is pleased with my answer to the question .
His parents are proud of the progress made by him .
Tens of thousands of people are protecting their city from the attack of the flood .
I will know the result sooner or later .
Hangzhou is famous for its tea and silk .
Many old people were present at our concert .
It takes him twenty minutes to go to work by bus .
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