问题 填空题 词形转换。1. sell (名词) 2. piece (复数) 3. safe (反义词) 4. cheap (反义词) ______ ______ ______ ______ 5. I (反身代词) 6. pay (过去式) 7. hungry (反义词)8. bake (过去式) ______ ______ ______ ______ 答案 l. sale 2. pieces 3. dangerous 4. expensive 5. myself 6. paid 7. full 8. baked