按要求写出下列句子。
（1）Jenny’s stamps were on the table before.（改为一般疑问句，并作否定回答）
                                                                  
（2）weather was cold yesterday.（写出问句）
                                                                  
（3）s shoes are clean now.（用yesterday evening改写句子）
                                                                  
（4）n painted a picture last Tuesday.（就划线部分提问）