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22 It’s cruel _____ you to kill such a small animal.
A. forB. of C. to D. about
23 Something has gone wrong. Who is ________?
A. to blameB. blamingC. blamedD. to be blamed
24 It is no use_____ him for help, because he is not warm-hearted.
A. to askB. askedC. askingD. ask
