Is woman in red your mother? –Yes. She is teacher and works in our school.A. the /B. a

问题补充：

Is woman in red your mother?

–Yes. She is teacher and works in our school.

A. the, /

B. a, the

C. the, a

D. a, a

答案：

A. the, /

B. a, the

(答案→)C. the, a

D. a, a

解析：考察冠词。句意：这个穿红色衣服的女人是你的母亲吗?——是的，她是一位老师，在我们学校工作。结合语境可知前文特指穿红衣服的女人，故用定冠词。下文泛指任何一位老师，故用不定冠词。选C。