题目内容：

If you are planning a vacation on the beaches of the Baltic Sea, in north Poland, you’d better buy or build 1. (you) a space separator. The unique tool is clearly a must on those beaches, at least if you want to fit in with 2. crowd.

I was recently looking through Eastern-European pictures and news as I usually do, 3. I came across a collection of strange beach photos where everyone had a cloth wall surrounding their 4. (limit) space of sand. The cloth wall was everywhere, but I had never seen anything like it before. 5. (fortunate), except the title, “Polish Beach Introverts (性格内向的人),” there was no 6. (explain) as to why everybody was using it. So I did some research online. Finally, I found a Russian website talking about it.

According to the website, beach separators 7. (be) a part of Polish beach-going culture for a very long time, but have recently been getting a lot of attention online, since foreign tourists 8. (take) a vacation at the Baltic Sea started posting photos of separator-covered beaches 9. the Internet Actually, beach separators weren’t designed to protect their users from prying (窥探的) eyes. It’s no secret that strong winds are very common on the beaches of the Baltic Sea, so the separators allow beach-goers 10. (enjoy) sunbathing without having their things blown off.