阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
In December 2018, a bunch of friends and I went to Europe to travel. Upon arrival in Vienna, we got the keys to the house from its owner. The 【小题1】 (decorate) of the house was quite good.
In Vienna, if anyone wants to copy a key, he or she is expected 【小题2】 (prove) their ownership of the property (房产) the key is for. It’s also really expensive. An ordinary key usually costs 150 euros (1.170 yuan). As the person in charge of the keys, I had a great responsibility.
【小题3】 next day, we went everywhere, including the Sisi Museum and a coffee shop in the city center, 【小题4】 had dinner in a fancy restaurant. We felt quite relaxed. While we 【小题5】 (enjoy) dinner, my friends came up to me, asking for the keys so they could leave early. It was then that I realized that I’d lost them.
The host asked us to give him 300 euros to cover the cost of a new set of keys. We made a complaint about it but we had to pay the money. So, hoping to get our money back, we decided to do some detective work 【小题6】 our own.
I wrote an email to the Sisi Museum in the middle of the night, wondering whether the staff had found them. Early in the morning, I received their reply, saying that they had not.
【小题7】 (fortunate) in the end, the keys were found in a souvenir shop. The host even said congratulations to us.
Though we saw many great 【小题8】 (sight) in Europe, the most 【小题9】 (value) thing about my trip was this lesson I learned: Never lose your keys in Vienna. Your keys ought to 【小题10】 (take) good care of.
