A: Do you visit home often?B: I can't because I am too busy. I only see my parents ___ six months.(a) other (b) every (c) for (d) another요 문제 답을 (d)로 적어놨는데, (b)는 왜 안되나요? ㅜㅜ 뜻을 보면 6개월마다 간다로 하면 되는거 같은데,제가 답을 잘못메모한거겠죠?