Use 'guarantee' in a Sentence

The company was so sure that their new product would be a hit that they offered a money back guarantee for customers that weren't satisfied and want a refund.
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We guarantee that you will love our product, it is one of the most demanding products in the US and The Caribbean.
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The bank had a guarantee in terms of their relationship between the actual property and the lender and borrower to safeguard its assets.
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