Mary is___only girl who has been to Amexian in our company A:a B:the C:an D:\

问题描述:

Mary is___only girl who has been to Amexian in our company A:a B:the C:an D:\

B
Mary is the only girl who has been to Amexian in our company.
Mary是我们公司唯一一个去Amexian(话说这里应该是American吧?)的女孩.