An old saying goes, "When in Rome (罗马), do as the Romans do." I learned the meaning of this when I studied in Russia.
One day I 1 some of my Chinese friends to a famous local restaurant in Moscow. My guests and I were excited from visiting Red Square and happy about our meeting. We chatted 2 until the waiter told me that we were talking too loud. We turned our voices lower. But this didn't last long. The waiter came over to us two more times with the same 3.
How bad an impression (印象) we must have left on the local people! In China, it's natural and 4 for a host (主人) to make a lively atmosphere (气氛). However, in Russia and western countries, having a meal in a public place means you must 5 your voice low. You need to be polite to others.
I felt 6 about this. Even though we tried our best, it's very difficult to form a new habit. Russians have their own special habits. My Russian friend, Andrey always looks around and thinks for a while before leaving home. I asked him 7 he did this. "Aha," Andrey said, "In Russia, people always spend about a minute 8 things and plans in their minds before leaving. So they won't leave 9 necessary behind.
Finding the differences between 10 is very interesting. I'd like to keep my eyes and mind open.
