初中英语句子改错改错题

More and morepeople have realized the importantof food safety. 　       　

   A                    B          C

I don't think sixteen﹣year﹣oldsshould be allowedto get their ears pierce. 　　

            A                  B                 C

Though she is young butshe has been successfulin the medical field. 　 　

          A   B            C