story: Billy liked a pair of shoes at the shop. He didn't have any money to buy them. He had to figure out how to get some money and quickly. It was summer so he decided to mow lawns everyday after school. By the end of the week Billy was able to buy the shoes.
 selected sentence: By the end of the week Billy was able to buy the shoes.
Billy buys the shoes >Causes> Billy feel(s) happy