Good manners make the social world easier to navigate. They provide guidelines to 16 in times of uncertainty and reduce the chance of awkward exchanges.
答案：(C) follow
guidelines to follow（可依循的準則）表示良好禮儀提供了在不確定情況下可依循的準則；confront（面對）、remove（移除）、lead（引導，但文法上 lead the guidelines 語意不通）均不符合此處語意搭配。
本題大考中心未公布逐題答對率，以下不談數據，只談觀念。
四個都是常見動詞，文法上都放得進 to 後面；lead 特別誘人，因為 guidelines（準則）與 lead（帶領）聽起來意思相近，會讓人覺得「指引本來就是要帶路」。
先確認空格與哪個名詞成組：guidelines to ______（可以 ______ 的準則）。這個不定詞是回頭修飾 guidelines 的，還原成 guidelines that we can ______。所以真正要問的是：準則是拿來做什麼的？是拿來遵守的，follow guidelines、follow the rules 是固定的組合。順便看整句的 and 連的是哪兩樣：They provide guidelines to ______ ... and reduce the chance of awkward exchanges——and 連的是 provide 與 reduce 兩個述部，共用主詞 They，不是連 ______ 與 reduce。層級一抓錯，就會以為空格要跟 reduce 對齊而繞遠路。
confront（面對、對峙）後面要接被面對的難題（confront the problem），準則不是拿來對峙的。remove（移除）的受詞是要拿掉的東西，把準則移除與這一段在講禮節的好處剛好相反。lead 當「帶領」時後面要有被帶的人（lead the team），當「導致」時要接 to（lead to confusion），放進 guidelines to ______ 這個位置兩種用法都不成立。
follow guidelines（遵守準則）、follow the rules（遵守規定）、lead to（導致）、confront a problem（面對問題）、in times of uncertainty（在不確定的時候）、reduce the chance of（降低……的機會）
Having good manners is more than just being nice. Good manners make the social world easier to navigate. They provide guidelines to 16 in times of uncertainty and reduce the chance of awkward exchanges. For example, knowing who is supposed to go first or have a seat keeps us from having to negotiate every time. A world 17 good manners would be confusing and potentially confrontational.
Good manners certainly connect people to their 18 environment. Respecting good manners shows a desire to actively engage with a community and the people in it. 19 to adopt good manners sets people apart.
We might forgive people who let their manners slip, but we'll feel more positive about and strongly connected to those who 20. Good manners are very important because they teach us the proper way to behave in society.