52._________A.percentage B.group C.number D.propo

52._________A. favourB. profitC. gainD. value

52._________A. troubleB. timeC. fearD. pleasure

52._________A. dealB. workC. enrollD. communicate

52._________A. butB. althoughC. andD. despite

52._________A. isB. wasC. wereD. are

52._________A. attendingB. registeringC. inviting