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答案 一、 1. top 2. left 3. bottom 4. right 5. corner 6. left 7. address 8. stamp 二、 1.√ 2. 3.√ 4. 三、 4. 3. 2. 1 四、 1. C 2. D 3. A 五、略。 21世紀(jì)教育網(wǎng) / 。 I write three letters. One letter is for my mother. Another letter is for my father. The third letter is for my frie