光的反射和折射案例:改错：What good a boy he is!

改错：What good a boy he is! What a good studend? What a good studend? what makes a good teacher? what a fast boy he is! What makes a good Managing Director? what is a good language teacher? what does a work of art good What a good day! 啥意思 改错she has a (good)( memory )and is (good) at( writting.)