一个英语句子判断有无错误～

题目

一个英语句子判断有无错误～
The things you need to do is to read and listen more.
需要在listen的前面加 to

答案

things与is不符
句子可改为下：
1.The things you need to do are to read and to listen more.（to不可省）
2.The only thing you need to do is to read and listen more.（to承前省略.）
3.The things you need to do are reading and listening more.