1. Introduce the quotation with a complete sentence and a colon.
2. Use an introductory or explanatory phrase but not a complete sentence separated from the quotation with a comma.
3. Make the quotation a part of your own sentence without any punctuation between your own words and the words you are quoting.
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Since a participle takes the form: verb + -ing, the only word in this sentence which has such a form is B, 'challenging'. 'Puzzle' is a noun, 'crossword' is an adjective, 'created' is a verb.
Answer:
we should remeber the holocaust bc it was really important and we should honor the people who had to deal with all that stuff Explanation:
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