他躲进书房寻求清净，以便读那封信。

He sought ___solitude in his study to read the letter.

在山中，她找到了一种能带来内心平静的深沉孤寂。

In the mountains, she found a deep ___solitude that brought her peace.

在经历了多年不断的社交活动后，他开始珍视清晨散步时的那份独处时光。

After years of constant socialising, he began to value the ___solitude of his early morning walks.