You didn't provide the sentences, however, they probably contain things like vivid descriptions of things or their smells or how they feel when you touch them. If they are extremely realistic, then they are really vivid and this should be your correct sentence. Let me know if I'm wrong.
Answer:
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Charles Hooper met with an motorway accident and was crippled for like but he showed a lot of courage with the help of his dog he practiced walking everyday and finally started walking again.
Answer:Different words for concern could be worry, anxiety, care, mind and troubled. Hope I helped :)
Explanation: