题干
My mother is __________ English teacher in __________ school in Shanghai.
A：a; an
B：a; a
C：an; a
D：an; an
答案(点此获取答案解析）
C
My mother is __________ English teacher in __________ school in Shanghai.
A：a; an
B：a; a
C：an; a
D：an; an
