書名：全新制怪物講師教學團隊的TOEIC多益閱讀1,200題全真模擬試題
頁數：p.38第124題
題目：
Staff members agreed to work extended hours and to treat patients from 6
A.M. until ______ midnight.
(A)approximate
(B)approximated
(C)approximately
(D)approximating
疑問：答案是C，但midnight是名詞，為什麼不是用A形容詞修飾?