他在结冰的人行道上滑倒了。

He ___fell over on the icy sidewalk.

这个项目因为缺乏资金而失败了。

The project ___fell through due to lack of funding.

当听说能见到偶像时，他兴奋得手忙脚乱。

He ___fell over himself with excitement when he heard he could meet his idol.