A teacher once told each of her student to bring a clear plastic bag and a bag of potatoes to school. For every person they didn’t want to forgive in their lives, they chose a 36 , wrote a person’s name 37 it and the date, and put it in the plastic bag. Some of their bags were very 38 . Then they 39 to carry this bag with them 40 for one week. They would put it beside bed 41 , on the seat when 42 in a car or on a bus, and next to their desk at school. Days of carrying the bag around with them 43 tudents get to know what a weight they were carrying in their 44 . And they had to pay attention to it 45 o they didn’t forget it or 46 it in embarra ing（令人为难的） places 47 time pa ed by, the potatoes went 48 and 49 asty （恶心的）.Too often we think of tolerance（忍耐） as a gift to other people, and it clearly is for 50 ! If we choose to keep our sadne and hatred（仇恨） in our hearts, we will have to carry them around all our lives. ( )36.A bag B potato C desk D pen ( )37.A i B o C at D under ( )38.A heavy B beautiful C light D big ( )39.A told B tell C were told D have told ( )40.A anywhere B somewhere C everywhere D nowhere ( )41.A in the morning B in the afternoo C during the day D at night ( )42.A sit B sat C sitting D would sit ( )43.A kept B made C asked D allowed ( )44.A mind B pocket C eye D boxes ( )45.A at time B all the same C at the same time D all the time ( )46.A forget B let C leave D lose ( )47.A With B Whe C While D As ( )48.A bad B well C good D badly ( )49.A sounded B tasted C smelt D felt ( )50.A themselve ourselves C himself D yourself