1-C. They each thought the other was the quiet type.They each thought the other was the quiet type.
彼らは、それぞれに思いました、相手が、静かなタイプだとダヨ。
2-C. Quiet music can make us feel comfortable.Quiet music can make us feel comfortable.
静かな音楽は、私たちに快適さを感じさせることができます。
3-C. When you arrive at your new home, it may be a good idea to put your cat in a quiet room, if possible.When you arrive at your new home, it may be a good idea to put your cat in a quiet room, if possible.
4-C. Although it gets dark early and some museums and attractions are closed, as are many hotels, this quiet season is most relaxing for some visitors.Although it gets dark early and some museums and attractions are closed, as are many hotels, this quiet season is most relaxing for some visitors.