People have to stay in a ____place when sonmeone smokes on the bus.(smoke)

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People have to stay in a ____place when sonmeone smokes on the bus.(smoke)
People have to stay in a ____place when sonmeone smokes on the bus.(smoke)

People have to stay in a ____place when sonmeone smokes on the bus.(smoke)
答案smoking.

non-smoking

smokeless 无烟的