---Allen has made great progress recently.- and .A. So he has; so have you B. So he ha

问题补充：

---Allen has made great progress recently.

---, and .

A. So he has; so have you B. So he has; so you have C. So has he; so do you

答案：

解析：句意：Allen最近取得了巨大的进步。他确实如此，你也取得了进步。So+助动词/情态动词/系动词+主语：某某也如此；so + 主语+助动词/情态动词/系动词+主语：某某确实如此。该句式在时态，人称上与前一个句子相同。根据句意，故选A。