We are glad to you on the progress you have made.A. congratulateB. celebrateC. greetD. ap

问题补充：

We are glad to you on the progress you have made.

A. congratulate

B. celebrate

C. greet

D. appreciate

答案：

(答案→)A. congratulate

B. celebrate

C. greet

D. appreciate

解析：A 考察动词词义辨析。Congratulate sb on sth祝贺某人某事；celebrate后面的宾语不是人。Greet问候，appreciate欣赏，感激；