问题描述：
语法填空
Helsel was helping her mother with the housework when she noticed rain entering ___ open kitchen window 空中应该填什么呢?为什么?谢谢～
麻烦各位能说下为什么吗？谢谢
Helsel was helping her mother with the housework when she noticed rain entering ___ open kitchen window 空中应该填什么呢?为什么?谢谢～
麻烦各位能说下为什么吗？谢谢
问题解答：
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