单词辨音，找出一个划线部分读音与其它不同的选项。
- How far is it from here to Huangshan Mountain?-- About in a car.
--When did you become a volunteer for the elderly?-- Two years ago. I this group since then.
He met many problems he was going over his lessons.
--Where does your uncle work, Tom ?--He is in a hospital he works as a doctor.
In our school library there a number of books on science and the number of them g rowing larger and larger.
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