那次考试简直是小菜一碟。

The exam was ___a ___piece ___of ___cake.

写那篇文章对他来说易如反掌。

Writing that essay was ___a ___piece ___of ___cake for him.

经过这么多训练，最终的演示感觉轻而易举。

After so much training, the final presentation felt like ___a ___piece ___of ___cake.