对熟练的厨师来说，做这道菜简直是易如反掌。

For an experienced cook, making this dish is a ___cinch.

提前练习可以确保你通过考试。

Practicing in advance will ___ensure your success in the exam.

牛仔检查了马鞍的肚带是否系紧。

The cowboy checked if the ___cinch was tight enough on the saddle.