I was very to see our teacher at the party because he was ill.A. interestedB. surprisedC.

问题补充：

I was very to see our teacher at the party because he was ill.

A. interested

B. surprised

C. surprising

D. surprise

答案：

A. interested

(答案→)B. surprised

C. surprising

D. surprise

解析：interested感兴趣的；surprised吃惊的；surprising令人吃惊的；surprise惊奇，使吃惊。在晚会上看到我们的老师，我很吃惊，因为他病了。结合语境可知选Ｂ。