默写诗句。  
(1)谁言寸草心，                           。(孟郊《游子吟》)    
(2)飞流直下三千尺，                              。(李白《望庐山瀑布》)     
(3)我寄愁心与明月，                               。(李白《闻王昌龄左迁龙标遥有此寄》)     
(4)                                ，化作春泥更护花。(龚自珍《己亥杂诗》)