We spent many years studying the formation of rocks , experiencing many sufferings and even death. But our hard work ____________in the end , and we made it.
A. came out B. paid off C. made up D. gave away
We spent many years studying the formation of rocks , experiencing many sufferings and even death. But our hard work ____________in the end , and we made it.
A. came out B. paid off C. made up D. gave away
B