Mark's father owned a provision shop. Many people bought things from his shop. When Mark was free in the morning in the shop, he dusted and wiped the shelves. He arranged the items in neatly.

　Sometimes he weighted things for the customers. He also collected money from customers and put it in a drawer behind the counter.

　Mark's father closed the shop at seven in the evening. Then Mark would help to sweep the floor and count the money collected for the day. After dinner, Mark would do his schoolwork .Mark was truly a helpful son. He was a good example for others to follow.