the students are discussing the questions in groups.
the students are discussing the questions in groups.
为什么group 要加S呢
为什么group 要加S呢
英语人气：231 ℃时间：2020-05-21 12:23:57
优质解答
因为分组group肯定不是一组啊,一般讨论都是好几组的,所以加s,表示复数,
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