Question 251. Johnny used to be one of the most                    athletes in my country.A. succeed                         B. success                          C. successful                     D. successfullyQuestion 252. The 22nd SEA Games consisted of athletes from eleven                   countries.A. participate                     B. participant                    C. participation                 D. participating256 CÂU TỪ VỰNG TỪ ĐỀ CÔ NGUYỄN PHƯƠNG