21. 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
22. The ordinary girl sat silently at the corner , but when the prince came over to invite her to dance , her face immediately .
A. turned up B. burnt up C. cheered up D. lit up
23. When asked by news reporters , the film star of stage and screen that he would pay a visit to America next week.
A. confirmed B. identified C. proposed D. approved
