Write the correct sentences.句型转换。
（1）I asked my mother to send it.（改为否定句）
                                                 
（2）Lynn thinks Santa brought her some gifts.（改为一般疑问句）
                                                 
（3）Li Lei is writing a letter.（改为一般现在时）
                                                 
（4）Time for supper.（改为同义句）
                                                 
（5）Lily reads the newspaper.（用“yesterday”改为过去时）