他埋头苦干了整整一周才完成这个项目。

He ___slogged away for a whole week to finish the project.

士兵们背着沉重的装备在沙漠中艰难跋涉。

The soldiers ___slogged across the desert with heavy gear.

他用力地击打沙袋，发出沉闷的响声。

He ___slogged the punching bag with all his strength, making a dull thud.