问题描述：
the number of the students much in our school every year.
为什么用isn't changed 不用 doesn't change啊
is 和does 分辨
the number of the students（) much in our school every year。
为什么用isn't changed 不用 doesn't change啊
is 和does 分辨
the number of the students（) much in our school every year。
问题解答：
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