按要求改变句子
1)It means the floor is wet.(对划线部分提问)
                                            
2)They are eating some noodles in a restaurant. (一般疑问句)
                                            
3) Is someone smoking? (陈述句)
                                            
4)Smoke here. (否定句)
                                           
5)I can smell it. (一般疑问句)