改写句子。    
1．我国人口是世界上最多的国家。（修改病句）   
                                                                                                
2．王奶奶去世了，难过地流下了眼泪。（修改病句）   
                                                                                                 
3．我们学校真美丽。（改比喻句）    
                                                                                                
4．父母对我们这样无微不至地关怀，难道我们就不应该报答他们吗？（改陈述句）
                                                                                                                

【考点】病句辨析,改写句子,修辞方法

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