He gave a(n) ____ smile when he saw his rival. The patient received a(n) ____ heart implant last year. The journalist was fired for publishing ____ information. I prefer honey to ____ sweeteners. The police discovered that he had been living under a(n) ____ identity. The light in this room looks natural, but it’s actually ____. The teacher corrected several ____ answers in the test. Scientists are working on ____ intelligence to improve automation.

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