每个人都会犯错误，关键是从中学到教训。

Everyone makes ___mistakes, but the key is to learn from them.

很多人错误地认为空腹喝牛奶对身体不好。

It's a common ___mistake to believe that drinking milk on an empty stomach is bad for health.

老师指出我的数学计算中有三个错误。

The teacher pointed out three ___mistakes in my math calculations.