Nowadays, on April Fools’ Day, people often 19 to create elaborate hoaxes to fool others.
答案：(B) go to great lengths
go to great lengths to V 是「不遺餘力、費盡心思去做某事」，本句指人們常費盡心思設計精巧的愚人節惡作劇；come to an end（結束）、put into service（使投入使用；in service 為使用中、服役中）、hold in store（並非正確說法，應為 have in store）都不合。
你是不是把 go to 讀成「去某個地方」、great lengths 讀成「很長的距離」？這個推論有來源——你背的 go to 幾乎都接地點（go to school、go to the park），那條規則在那些例子裡都成立。邊界在於：go to 後面接抽象名詞時，講的是「達到某種程度」，不是移動。length 在這裡也不是「長度」，複數配 great，整組 go to great lengths ＝ 不惜下重本、大費周章。檢驗法看後面接什麼：這個片語固定接 to + 原形表目的（to create elaborate hoaxes）。若照「去很長的地方」讀，後面那個 to create 就無處可掛——掛不上去，就表示你切錯了。
線索在空格前後兩句。空格句有 elaborate hoaxes（精心設計的騙局），elaborate 已經指明「費工」；下一句更直接——報社、電台、電視台、網站都下場參一腳，BBC 甚至拍了瑞士農民從樹上採收義大利麵的畫面。動員到這種規模，填進去的只能是「不遺餘力」。
come to an end ＝ 結束，主詞得是事件。put in service 的標準說法是 put into service（使投入使用，用於設備）。hold in store 不是正確說法，正確的是 have／be in store for sb ＝ 某事正等著某人。這一組一句記完：The company went to great lengths to film the ad, went the extra mile on the music, and later explained every choice at length.（那家公司費盡心思拍這支廣告，配樂上更多做了一分，事後又詳詳細細解釋了每個決定。）〔情境取材自 97 指考作文題：印象深刻的廣告〕go the extra mile ＝ 付出比別人預期更多的努力，典故出自《馬太福音》。
go to great lengths to V（大費周章）、go the extra mile（多付出一分努力）、at length（詳盡地；終於）、elaborate hoax（精心設計的騙局）、play a joke on sb（對某人惡作劇）、be in store for sb（某事正等著某人）。
April Fools' Day, one of the most light-hearted days of the year, has an unclear origin. Some see it as a celebration related to the turn of the seasons from winter to spring; others, however, believe that it 16 the adoption of a new calendar. Ancient cultures celebrated New Year's Day on or around April 1, which roughly coincides with the beginning of spring.
In 1582, Pope Gregory XIII ordered a new calendar, which called for New Year's Day to be celebrated on January 1. However, many people, either refusing to accept the new date or not having heard about it, 17 to celebrate New Year's Day on April 1. Other people began to make fun of these traditionalists, sending them on "fool's errands" or trying to fool them into believing something false. 18 , the practice spread throughout Europe and the rest of the world.
Nowadays, on April Fools' Day, people often 19 to create elaborate hoaxes to fool others. Newspapers, radio and TV stations, and websites have participated in the April 1 tradition of making 20 reports in order to fool their audiences. The BBC once reported that Swiss farmers were experiencing a spaghetti crop and showed scenes of people harvesting noodles from trees. Guess what? Numerous viewers were fooled.