爆笑英語口語 第75期:知根知底
Language Points
God only knows.
If you know what is good for you
know backwards and forwards=know inside out
He's been teaching physics for 30years,so he knows the subject backwards and forwards.
Language Points
God only knows.
If you know what is good for you
know backwards and forwards=know inside out
He's been teaching physics for 30years,so he knows the subject backwards and forwards.