500
While the older sister ______ ____________ a cake for her brother's birthday, she dropped the bowl full of sugar. While she ______ ___________ up the mess, the dog came in and started eating the sugar. While the dog ________ ___________ the sugar, the older sister screamed for help.
While the older sister was making a cake for her brother's birthday, she dropped the bowl full of sugar. While she was cleaning up the mess, the dog came in and started eating the sugar. While the dog was eating the sugar, the older sister screamed for help.