書名：新多益必考600單
頁數：p.5
題目：I don't feel any ___ to give my boss more than two weeks notice when I l
eave.
(A)oblige
(B)obligatory
(C)obliged
(D)obligation
疑問：為什麼答案是D，不是B。feel後面不是該加形容詞或子句嗎？