1. All of us have _____ your application to join our group, and we would like to welcome you to the team.



approved / allowed 에서 allowed가 안되는 이유는?



2. The most memorable moment _____ when we gather in small group.



became / occurred 에서 became이 안되는 이유는?



너무 헷갈립니다!! 알려주세요!!