有些英语老师很认真的灌输学生错误的文法概念，
浑然不知参考书和测验卷的试题充满谬误。
http://ocw.aca.ntu.edu.tw/ntu-ocw/ocw/cou/101S102
台大外籍教授史嘉琳回复某些国中英语教师的提问如下。
A question from Ashley Lee:
> Dear Prof. Chung,
“He is not in Taiwan. He has ____ America for two weeks.”
(A) gone to
(B) been in
(C) gone in
(D) been to
The answer given to this multiple choice question is (B). Could you please
explain the differences among (A), (B), and (D)?