He is thiner than his brother.The pen is the more expensine of all the pens.改错

问题描述:

He is thiner than his brother.The pen is the more expensine of all the pens.改错

more 改为most

thinner
more改most

thiner -> thinner
The pen is the more expensive of all the pens.-> The pen is the more expensive one of all the pens.