问题 填空题 补全下列单词。1. w__ng 3. b__ __d 5. f__ __ 7. s__m__ 2. f__ __thers4. c__t6. t__ __l8. diff__ __ent 答案 1. wing 2. feathers 3. bird 4. cat 5. fur 6. tail 7. same 8. different