The shelves in most supermarkets are full of family-size this and multi-buy that.

上面的句子摘自2024年高考英语浙江卷（1月）的语法填空真题的第一句话。不太明白句中的this和that是什么用法。另外句子如何翻译？谢谢!

附全文(供参考）：

The shelves in most supermarkets are full of family-size this and multi-buy that. However, if you’re shopping for one, buying extra ___56___ (benefit) from price reductions doesn’t make sense. Either your shopping is then too heavy to carry home ___57___ you can’t use what you’ve bought while it’s still fresh.

Of course, shops are not charities — they price goods in the way ___58___ will make them the most money. If most of their customers are happy to buy larger quantities, that’s ___59___ they’ll promote. But that leaves the solo (单独) customers out of pocket and disappointed.

Many supermarkets are no longer doing “buy one get one free” promotions because of the ___60___ (criticize) that they lead to waste. Consumers prefer money off individual items. However, though it’s nice to get a few cents off a pack of sausages, it would help even more if they could sometimes ___61___ (offer) in smaller packs. Even the biggest sausage fan doesn’t want to eat them every day.

If your supermarket sells loose produce, then buying smaller quantities is easier. Over the last two years, some supermarkets ___62___ (start) selling chicken or salad in packs ___63___ (design) with two halves containing separate portions (份). Then, when you use one section, ___64___ other stays fresh.

Who knows, perhaps some of the more forward-looking ___65___ (one) may yet come out with a whole range of “just for you” pack sizes with special offers as well.