패밀리 사이트 열기/닫기 추가

왜 wouldn't have been이 아니라 wouldn't be이죠?

had known이 과거 pp이니 뒤에 과거완료(wouldn't have been)가 와야하는거 아닌가요?

예를 들어, If she had gone ~, my brother ____ longer 에선 would have lived가 맞는 답인데 헷갈려요ㅠㅠ