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第73页

信息发布者：

to laugh or shout loudly in public

do as she does

to keep your voice down in public

bump into someone

say “sorry”

The Chinese.

Acting according to the host's way of doing things.

He feels unhappy.

Is it OK if I smoke？

It's impolite for a guest to talk loudly.（开放性题目，答案不唯一，符合情理即可）