问题描述：
1、you need buy something.You'll find a_____.
2、You need to catch a bus.You'll find a_____.
3、You need to see a film.You'll find a _____.
4、You need to post a letter.You'll find a _____.
2、You need to catch a bus.You'll find a_____.
3、You need to see a film.You'll find a _____.
4、You need to post a letter.You'll find a _____.
问题解答：
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