如果你在医生那里表现好，之后我就带你去游泳。

If you're a ___good boy at the doctor's, I'll take you swimming afterward.

我保证我会做个好孩子两个月，然后我会变回你认识的那个淘气鬼。

I promised I'll be the ___good child for two months, then I'll return to being the devil child you know!

一只行为良好的狗总是听从主人的话。

A ___good dog always obeys its owner.