---Your school are really proud of you!What___is so great!---You are so kind to say so.
问题描述:
---Your school are really proud of you!What___is so great!---You are so kind to say so.
A.you do
B.you have done
答
B
主语从句,what you have done是从句,做主语
而且从语境中可以知道“you”是因为做过了某些事情才成为学校的骄傲,所以应该用现在完成时