火眼金睛。分类写词语。  
鸡冠花      快乐      野蔷薇      姐姐      老虎       奶奶 
杜鹃花     狮子     难过       大象      悲伤      哥哥  
①  ____________________    
②   ____________________ 
③  ____________________    
④  ____________________