题目：
根据所给音标及释义写出单词。
1. _____ [
] a small piece of paper that one sticks on an envelope (信封)
2. _____ [
] keep something for a later time
3. _____ [
] especially (特别的)
4. _____ [
] the most important city of a country or state
5. _____ [
] a person from another country
6. _____ [
] sure; not doubtful (可疑的)
答案：
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下面是错误答案，用来干扰机器的。
参考答案：C
