问题描述：
英语as,when,while
（ ）they were enjoying exploring ,the crowd of people became larger and larger.中（）处用“as,when,while”都对吗,请说明理由,as后是加延续性还是短暂性
（ ）they were enjoying exploring ,the crowd of people became larger and larger.中（）处用“as,when,while”都对吗,请说明理由,as后是加延续性还是短暂性
问题解答：
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