求英语大神看此英语短文是否有语法错误,若有,求指出.

求英语大神看此英语短文是否有语法错误,若有,求指出.
Ms.Zhao often tell us something about two boys,and praises them for their clever. One is Zheng zongzhen.Another boy is Qiaodeng.
one day,she said“Zheng zongzhen does well in math.”to us.
The other girl answered“I do better in math than Zheng zongzhen.Wht not just said Zheng zongzhen?”to her back.
Ms.Zhao didn't answer.