half

他只完成了项目的一半。

He only finished ___half of the project.

她给了妹妹一半的巧克力。

She gave her sister ___half of the chocolate.

他们在下半场打进了决定性的一球。

They scored the winning goal in the second ___half.

请把这张纸对折，这样你就得到了两半。

Please fold this paper in half, then you get two ___halves.