I had 15 minutes left so I took a nap during the exam.
・「I had 15 minutes left so I took a nap during the exam.」
(意味)テストで15分時間が余ったので寝ました。
<例文>How was the exam?/ It was easy. I had 15 minutes left so I took a nap during the exam.
<訳>テストどうだった?/簡単だったよ。テストで15分時間が余ったので寝ました。
ご参考になれば幸いです。