Could you tell to me something about their cultural background?
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Mr. Wang has left in their mind a deep impression.
A. 对
B. 错
Do they always wave to you goodbye in an informal way?
A. 对
B. 错
There are always some people talk happily in the park.
A. 对
B. 错
There has some water in the glass.
A. 对
B. 错