1. This is my homeroom teacher, Mr. Seo. He is a Chinese letters teacher. He is very generous.

Question

2. This is my homeroom teacher, Mr. Choe. He is a M.E. teacher. He is strict.

3. This is my homeroom teacher, Mr. Choe. He is a ME teache. He is strict.

4. This is my homeroom teacher, Mr. Choe. He is a moral education teacher. He is strict.
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Are they all suitable? Which one can we use among 3, 4, and 5?

Answer 1

1 and 4 are correct.

You need to use "an" before an abbreviation like "M.E."

Ex:

He is an M.E. teacher.