问题 填空题 按要求写单词。1. piano (复数) _____________3. ski (分词) _____________5. fun (形容词) _____________2. store (同义词) _____________4. first (反义词) _____________6. forget (过去时) _____________ 答案 1. pianos 2. shop (答案不唯一) 3. skiing 4. last 5. funny 6. forgot