按要求改寫句子。     
1．他用一根長頭發(fā)綁住一只虱子。
改為“把”字句：                                                                           
改為“被”字句：                                                                            
2．蔡桓公派人把扁鵲請來。 
改為“被”字句：                                                                            
改為陳述句：                                                                                     
3．一只大雁被紀昌射中。 
改為“把”字句：                                                                             
改為陳述句：____