Though to see us, the professor gave us a warm wele.
A. surprising
B. was surprised
C. surprised
D. being surprised
网友回答
A. surprising
B. was surprised
(答案→)C. surprised
D. being surprised
解析：非谓语动词考查题。过去分词作状语表示分词与句子主语为被动关系。句意：虽然见到我们使教授很吃惊，教授还是热情欢迎了我们。