My mother isEnglish teacher in No. 2 Middle School.A. aB. theC. anD /

问题补充：

My mother isEnglish teacher in No. 2 Middle School.

A. aB. theC. anD, /

答案：

解析：介绍事物类别用不定冠词，元音音素前用an，辅音音素前用a，English第一个音是元音，故本题选C。