他在工作上付出了很多努力。

He ___put a lot of ___effort into his work.

经过数月的努力，他终于学会了游泳。

After months of ___effort, he finally learned how to swim.

全班同学共同努力完成了这个科学项目。

The class made a joint ___effort to complete the science project.

跑完马拉松耗尽了他所有的体力。

Running the marathon took all his ___effort.