21. Though he was angry with the naughty boy’s rudeness, he ______himself and talked to him with patience.
A. persuaded B. upset C. hid D. calmed
22. It will take many years to ______ from the death of a loved one.
A. suffer B. pack C. recover D. conquer
23. In order to know how heavy the elephant was, he wrote down the weight of each stone and then ______ all the weights.
A. packed up B. added up C. went through D. set down
