Though to see us the professor gave us a warm welcome.A. surprisingB. was surprisedC. sur

问题补充：

Though to see us, the professor gave us a warm welcome.

A. surprising

B. was surprised

C. surprised

D. being surprised

答案：

A. surprising

B. was surprised

(答案→)C. surprised

D. being surprised

解析：考查省略结构和非谓语。这里把句子补完整就是：Though he was surprised to see us ……，主语一致，分词作状语 省略主语和系动词。用being done的结构一般是解释为“正在被做……”显然这里用这个解释不通。