After signing million-dollar contracts with recording companies, singers devote most of their time 28 their music perfect while companies are busy commercializing their products.
答案：(C) to making
【句型】devote + 時間/心力 + to + Ving，是固定搭配，表示「把時間投入在……」；make their music perfect（使音樂完美）用 making 呼應 to 之後的動名詞形式。其餘選項的動詞搭配（doing／singing／playing）都無法接續「perfect」形成合理語意。
看到 to 就反射地想接原形動詞，於是先把 to making 排掉。這裡的 to 是介系詞，不是不定詞符號，後面要接動名詞。
句型是 devote ＋ 時間或心力 ＋ to ＋ V-ing（把……投入在做某事上）。填進去讀成 singers devote most of their time to making their music perfect（歌手把大部分時間投入在讓自己的音樂臻於完美上）。to 後面接動名詞的還有 be used to V-ing（習慣於）、look forward to V-ing（期待）、object to V-ing（反對），這一組要整批記起來。再看空格後面：their music perfect 是「受詞加形容詞」的形式，要一個能帶這種結構的動詞，make ＋ 受詞 ＋ 形容詞（使……變得……）正好，國中學過的 The news made me happy. 就是這個句型。
in doing、for singing、at playing：三個介系詞都與 devote 搭不起來，devote 只配 to。就算不看搭配，把 doing、singing、playing 代進去也接不出 their music perfect 這個結構——只有 make 能。
devote time to V-ing（把時間投入在……）、be devoted to（致力於……）、look forward to V-ing（期待……）、make ＋ 受詞 ＋ 形容詞（使……變得……）、sign a contract with（與……簽約）、be busy V-ing（忙著做……）。
Many entertainment celebrities, on April 5, 2002, attended an anti-piracy demonstration in Taipei. The purpose of the rally was to ask fans to respect the copyright and to stop buying 26 CDs. Although the intellectual property right is to be protected by law, the fans may think otherwise.
Obviously, it is the recording industry that wants to 27 piracy. Celebrities in the rally probably have no idea about how much a CD of their music albums costs. After signing million-dollar contracts with recording companies, singers devote most of their time 28 their music perfect while companies are busy commercializing their products.
It is the fans that support the kingdoms of the recording companies; 29, the industry never gives its feedback to the fans—by lowering the prices of CDs. It is an easy arithmetic 30. When one can buy a CD of pop music for NT$50 anywhere on the streets, why does he or she want to spend NT$300 or more for the same one?