漫长的一天后，他深深地叹了口气，在沙发上放松下来。

After a long day, he ___sighed deeply and relaxed on the couch.

“这太无聊了，”他叹气道。

"This is so boring," he ___sighed.

考试结束后，她如释重负地叹了口气。

After finishing the exam, she ___sighed with relief.