Thus, 30 on what a good listener does, he may become either popular or disliked in his lifetime.
答案：(D) depending
【句型】depending on 固定分詞構句，表示「取決於……」；depend（原形動詞）、depends（限定動詞）、depended（過去分詞）都不能這樣單獨開頭構成分詞構句。
本題大考中心未公布逐題答對率，以下不談數據，只談觀念。
四個選項是 depend 的四種形態排在一起，你會立刻認定「這是文法題」——這一次你想對了，這一格確實推得出來。不過要留意：同樣的排法未必都是文法題。90 年第 16 題的 given／give／giving／to give 看起來一模一樣，但 given that 早就整組轉成連接詞，去分析分詞構句反而會走錯方向。兩題擺在一起，正好用來練習分辨哪一種該走文法、哪一種只是問你認不認得。
先看結構：Thus, ___ on what a good listener does, he may become either popular or disliked in his lifetime.逗號後面 he may become ... 是完整的主要子句，主詞是 he、動詞是 may become。空格帶出來的這一串，前面沒有連接詞、裡面也沒有主詞，所以它不可能是另一個子句，只能是分詞片語。接著分主動被動：這一串要說的是「取決於一個善於聆聽的人做了什麼」，是主動的關係，所以用現在分詞 depending。還原成完整的說法是 Thus, it depends on what a good listener does, and he may become ...。depending on 用得非常固定，可以整組當「取決於、視……而定」記起來（Prices vary depending on the season. 價格視季節而定。）。
depend、depends：都是限定動詞，一定要有主詞才站得住，而空格前面只有一個 Thus，沒有主詞可以搭配；填進去會變成一個句子裡有兩個主要動詞，中間卻只用逗號連接。depended：過去分詞表被動或完成，但 depend 是不及物動詞（depend on），沒有受詞就談不上被動；語意上也不是「被取決」。
depending on（取決於、視……而定）、depend on（依賴、取決於）、It depends.（看情況）、either A or B（不是 A 就是 B）、in one’s lifetime（在某人一生中）、vary（不同、有差異）。
Most people like to talk, but few people like to listen. 21 listening well is a rare talent that everyone should treasure. Because they hear more, good listeners 22 to know more and to be more sensitive to what is going on around them than other people. In addition, good listeners are inclined to accept or tolerate 23 to judge and criticize. Therefore, they have 24 enemies than other people. 25 , they are probably the most loved of people.
However, there are 26 to that generality. For example, John Steinbeck is 27 to have been an excellent listener, yet he was hated by some of the people he wrote about. No doubt his ability to listen contributed 28 his capacity to write. 29 , the results of his listening did not make him popular.
Thus, 30 on what a good listener does, he may become either popular or disliked in his lifetime.