按要求写单词。 1. cold (反义词) ____________ 3. outside (反义词) ____________ 5. down (反义词) ____________ 7. sun (形容词) ____________ 9. autumn (同义词) ____________ 2. small (反义词) ____________ 4. leaf (复数) ____________ 6. sit (反义词) ____________ 8. skate (现在分词) ____________ 10. wind (形容词) ____________