The Summer Palace is a good place_____ (have) fun in Beijing.
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The Qinghai-Tibet Railway in China is the world's_____ (high) railway line.
Li Hua goes to school by bike every morning. It's fun and_____ (health).
It is_____ (expense) to take a taxi in big cities.
The subway is fast, cheap, and almost always on time, but it is often_____ (crowd).