阅读下列短文，根据短文内容填空。在未给提示词的空白处仅填写 1 个适当的单词，在给出提示词的空白处用括号内所给词的正确形式填空。
Invented 1 ． early twentieth-century America by Richard Drew, Scotch tape can be used to fix almost anything. However, there is more to this fix-it-all than just that. Sticky yet easily removed, Scotch tape was designed for use in painting cars—to mask off areas that should not 2 ． (paint). The tape soon found other uses. During the 1930s, people didn’t have much money, so they couldn’t throw away damaged things; they had to repair them. Drew’s painting tape became a popular, money-saving fix for everything from torn clothing to broken eggs. Since then, people 3 ． (find) all sorts of creative ways to use the sticky tape.
1 ． in
2 ． be painted
3 ． have found
【分析】
本文是说明文，介绍了透明胶带的发明和运用史。
1. 考查介词。句意：在 20 世纪早期的美国，理查德 · 德鲁发明了透明胶带，它可以用来固定几乎任何东西。语法填空题中无提示词的情况下，通常填介词、冠词、连词和代词。结合句意可知介词 in 与 early twentieth-century America 构成地点状语，表示 “ 在 20 世纪早期的美国 ” 。故填 in 。
2. 考查动词时态和语态。句意：透明胶带是为汽车喷漆而设计的，用它来遮盖不应该涂漆的地方。分析句子结构可知 that 为定语从句修饰先行词 areas 。再分析定语从句结构可知 paint 是从句中谓语动词，且和主语 that 即 areas 之间有被动关系，所以应该使用被动语态 , 又因前有情态动词 should ，因而应用 be painted 。故填 be painted 。
3. 考查动词时态。句意：从那时起，人们找到了各种有创意的使用胶带的方法。分析句子结构可知 find 在句中作谓语动词，同时句中有常与现在完成时态连用的 Since 时间状语，所以应使用现在完成时态，又因 people 作主语时谓语动词常用复数，所以应用 have found 。故填 have found 。