A teacher once told each of her students to bring a clean plastic bag and a bag of potatoes to school. For every person they didn't want to forgive(原谅) in their lives, they chose a potato, wrote the person's1and the date on it and put it in the plastic bag. Some of their bags were very2.They were then told to carry this bag with them3for one week. They would put it beside their bed at night, on the seat when sitting in a car or on a bus , and next to their desks at4. The5carrying the bag around with them made students get to know what a weight they were carrying in their minds. They had to pay attention to(注意) it all the time so that they wouldn't6it or leave it in embarrassing(尴尬的) places. As time passed by, the potatoes went7and smelt terrible. Too often we think of tolerance(宽容) as a8to other people, but it clearly is for9! If we choose to keep our sadness and hatred(仇恨) in our hearts, we will have to10them around all our lives.