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Afteryearsofhardwork,hisefforts,whichwasquitearelief.[]A.madeupB.paidoffC.tookonD.holdback

题目详情
After years of hard work, his efforts ________,  which was quite a relief.
[     ]
A. made up    
B. paid off
C. took on      
D. hold back
▼优质解答
答案和解析
B