Complete the sentences with suitable adverbs or prepositions to collocate with the italicized words.1. When shopping online, you may post a review in exchange _____ a free or discounted product.2. I look forward to seeing you next month at the seminar and ____ the meantime, should you have any queries, please do not hesitate to contact me.3. Customers were amazed at the range of products _____ offer in the new supermarket.4. The businessman was deep _____ debt and could see no way out.5. Those companies that can provide goods or services _____ a low cost are likely to survive the financial crisis.