the用在什么地方

she plays the piano. 她会弹钢琴。where do you live? i live on the second floor.你住在哪？我住在二层。 that's the very

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she plays the piano. 她会弹钢琴。

where do you live? i live on the second floor. 你住在哪？我住在二层。

that's the very thing i've been looking for. 那正是我要找的东西。