把下列句子改为陈述句。   
1．世界上还有几个剧种在演出时是没有舞台的呢？
                                                                                                                                                    
2．这里的工作多么重要，我哪能离开呢？   
                                                                                                                                                    
3．懒人怎么知道有几棵树会枯萎呢？    
                                                                                                                                                   
4．秦王我都不怕，会怕廉将军吗？
                                                                                                                                                    
5．那璀璨的华灯能不让我想起亲爱的战友吗？ 
                                                                                                                                                   
6．小学生怎能不遵守《小学生守则》呢？