1) With 3-D printers, researchers can avoid _____ costly mistakes. a) to make b) making 2) Some people hear about amazing objects made by 3-D printers and start _____ they can make the same things themselves. a) believing b) believe 3) 3-D printers allow designers _____ new concepts. a) to test b) testing 4) Experts think _____ human tissue with 3-D printers is a distant possibility. a) to produce b) producing 5) With 3-D printers, researchers can avoid _____ costly mistakes. a) to make b) making 6) If a student needs _____ a model for a science project, a 3-D printer can be useful. a) to make b) making 7) For several decades, robotics companies in Japan have been working toward their ambitious goal—they intend _____ a perfect humanoid robot. a) creating b) to create 8) They hope, one day, _____ able to make androids look exactly like humans. a) being b) to be 9) Some scientists are also trying _____ their androids a personality. a) to give b) giving 10) However, there are people who simply refuse _____ a future where robots and humans live and work side by side. a) accepting b) to accept 11) Other people don’t mind _____ about a future where robots play an important role. a) to think b) thinking 12) Personally, I think I would enjoy _____ with a robot that can think, act, and relate to humans. a) to interact b) interacting 13) If asked, I’d certainly agree _____ an android do chores around my house. a) to have b) having 14) The question is, will we ever regret _____ robots so much like humans? a) to make b) making

Perspectives 3. Unit 2C. Verbs followed by gerunds or infinitives

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