Mary was born in America and her native language was English.
A.So Would I B. So it was with me
C.So did I D.So I would
答案是B为什么不是C阿？
参考答案:So () I 句型中括号里的内容：如果之前已经提及的是BE动词，则也用BE动词。如：They are studying English and so AM I. 如果之前是DO动词，才用DO。如:They all study English and so DO I. 这里的意思是MARY出生于美国，（BE born in America）,她的母语是英语（BE English）,而B选项的意思是我也是（这个情况），it指代the situation。