—David has made great progress recently.— and . Keep up the good work Tom.A. So he has;

问题补充：

—David has made great progress recently.

—, and . Keep up the good work, Tom.

A. So he has; so you have

B. So he has; so have you

C. So has he; so have you

答案：

解析：so+助动词、情态动词、be动词+主语（主语与上文不一致，表示另一人也这样）而so+主语+助动词、情态动词、be动词（主语与上文内容一致,表示上文中提到的那个人，的确是这样）故选根据意思可知答案为B