词汇：help, teacher, pupil等校园词汇 — 英语选择题

选择正确的单词补全句子：The old woman can't carry her books. I want to ___ her. But I am a ___, not a ___. So I ask my ___ for help. A. help / pupil / teacher / teacher B. help / teacher / pupil / pupil C. help / pupil / teacher / pupil D. teacher / pupil / help / teacher