由于年久失修，那座桥突然倒塌了。

The bridge ___collapsed suddenly due to poor maintenance.

谈判失败后，整个协议立刻崩盘了。

After the negotiations failed, the whole deal ___collapsed immediately.

她在烈日下工作太久，最终晕倒了。

She ___collapsed after working too long under the hot sun.

他轻松地把折叠椅折叠起来以便存放。

He easily ___collapsed the folding chair for storage.