----- Nội dung ảnh ----- IV. Write the correct form of the given word. 1. Newton is considered one of the greatest __________ in the world. (SCIENCE) 2. Henry got a higher score for his literature test last week because he did it more __________ than the other students. (CARE) 3. We couldn’t even recognize that robot was working because it was moving very __________. (QUIET) 4. He is extremely excited because he thinks he saw a sudden __________ of a spaceship last night. (APPEAR) 5. I find her story about UFOs hardly __________. (BELIEVE) 6. Environmental pollution has led to the __________ of many species of plants and animals from our planet. (APPEAR) 7. Many UFO __________ have been recorded by the United States government. (SIGHT)