按要求改写语句。  
1．你怎么能让他们这样对待妈妈呢？   
改为陈述句：____                                                                   
2．我把外公捐献器官的心愿告诉了温迪。 
改为“被”字句：____                                                                                      
3．我被他们的对话惊呆了。 
改为“把”字句：____                                                                                       
4．母亲的角膜给予了他人。 
改为双重否定句：