照样子改写句子。 
1．例：聪明的猎人打死了一只凶恶的狼。   
            聪明的猎人把一只凶恶的狼打死了。   
            一只凶恶的狼被聪明的猎人打死了。
(1) 我们克服了学习上的许多困难。
                                                                                          
                                                                                          
(2)他送给了我一件十分珍贵的礼物。
                                                                                            
                                                                                            
2．例：反映情况一定要实事求是。   
            反映情况怎么能不实事求是呢？ 
(1)他的意思表达得非常清楚。
                                                                                                  
(2)这是一幅很有创意的国画。