It was surprise that my first teacher, already 90, was still living and in good health.A.

It was surprise that my first teacher, already 90, was still living and in good health.
A. the; a
B. /; a
C. a; /
D. a; the

A. the; aB. /; a (答案→)C. a; / D. a; the解析：考察冠词。本题第一空后的名词surprise原来是一抽象名词“惊讶”；本题具体化为：令人惊讶的事情。是一个可数名词。第二空是固定搭配in good health身体健康。句义：我的启蒙老师，已经90多岁了，身体仍然很健康。这真是一件令人惊讶的事情！故C正确。

感谢回答，我学习了