【陳可尼】評論
當那個男提起 (由whom可知道受詞是人)Whom was that man referring to?
【sage_chung】評論
whom 是被動, 所以that man 要用主動...我覺得
【Cassidy Tung】評論
To whom was that man ___? 原句應是:That man whom was reffering to ?
【農夫】評論
was + ?,只有 (c) 符合文法。這種題型已被 TOEIC 拋棄,因為台灣人超會背文法。