题目内容：

when visiting a foreign country,we might find the country's customs strange to us.when是连词还是副词
,怎么区分,

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连词疑问副词interrogative adverb1,at what time 何时,什么时候when did you last see him?.你上次见到他是什么时候?.[with prep.]since when have you been interested?.你从什么时候开始感兴趣的?.,2,how soon 多...