C and B. A past tense refers to the past. Crawls is currently doing, was crawling could be either present or past, so if you have a multiple choice that would be one of them. C is crawled, meaning he was. And D is will crawl, meaning the future.
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the grammar is okay but you have used capital letters where it should not be used. Also, in some places the required fullsyop and commas are missing.
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Armed conflict escalated in August 2017 in Rakhine State, causing Rohingya to flee to nearby Bangladesh.
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This is my book and that is your book.
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