Today,I become a supermarket operator. I need to do a lot of work every day. Most importantly, I need to serve the customer including helping them find the goods they need, weighing the vegetables and fruits as well as checking the cash. After a day's work, I have to clean up the supermarket and check up the inventory to make sure to replenish the corresponding goods. In addition,I need to tally the day's receipts to know the profits. Every day, I must make the supermarket clean and goods availa