書名：new toeic test 金色證書文法
頁數：p.161 第29題
題目：This is the position for ____ she applied in order to receive higher
pay because she was dissatisfied with her present salary.
A) that
B) which
C) what
D) where
疑問：答案是B, 但為什麼A不行? that不是通用嗎?
謝謝!