A:

I think that good teachers should have several characters. First of all, she /he must be patient. they can answer the students’ question again and again until they totally understand them. Secondly, they should see every student equally. They won’t consider someone good students because they are smart, and judge someone bad students because they are stupid. Finally, they must have the spirit of teaching, which means they will devote themselves to the career of teaching, have responsibility and see all students as their own children.

B:

In my opinion, there are three main characteristics of a good teacher. Firstly, he should be knowledgeable, that is, he should know a lot to share with us. Secondly, he should be humorous because I want to hear funny stories from him. Finally, he should be dedicated as it is an important quality of a teacher. 

Personally, I believe that a good teacher should at least have the following two important characters, being patient and treating students equally. First, a good teacher is a patient one. If a teacher can answer students’ question again and again with a smile, they can indeed grasp much more knowledge. Secondly, the teacher can treat every student equally. He or she will not treat so called good students and bad students differently. This way, all students will get better personality cultivation.