This is to answer your letter of _______ on the Police Force's policies and pr ocedures concerning undercover detectives . a. require b. inquire c. inquiry d. request 題目是要選名詞,所以ab選項可刪除,但cd選項我覺得都可以耶,大家認為正解為何? 網路上找到的多益練習題,答案給d,但那篇其他題有出現錯誤解答,所以想向版友們求 解,謝謝囉