他疲惫不堪，直接瘫倒在椅子上。

He was so tired that he ___slumped into the chair.

由于经济衰退，房价急剧下跌了15%。

Housing prices ___slumped by 15% due to the economic downturn.

股市在坏消息公布后暴跌。

The stock market ___slumped sharply after the bad news was announced.

看完三个小时的电影后，他瘫倒在沙发上不想动弹。

After the three-hour movie, he ___slumped on the couch without wanting to move.