Definition: A good child or animal behaves well. Level: A2
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.
