What we do know is that the Native Americans usually 问:what是
What we do know is that the Native Americans usually 问:what是
what do you know about Native Americans and American Cowboys
It's not what do we know that's important is who do we know.
it is true that we do not know what we have got we lose it.选
it is true that we do not know what we have got until we los
Maybe it is ture ,that we do not know what we have got until
parents usually let their children do what they l_ Americans
为什么是Do you know what is the matter
Do you know what the a______basketball is?
Do you know what the answer is?
What we know is not much.What we do not know is immense.
What we know is nothing; what we do not know is immense中文是什么