It really shocked us that he should have made such rapid progress in his study in such

问题补充：

--It really shocked us that he should have made such rapid progress in his study in such a short time!

--No surprising. He has been making most of his spare time to study.

A. a; the

B. a; /

C. /; the

D. /; /

答案：

A. a; the

B. a; /

(答案→)C. /; the

D. /; /

解析：考查冠词：第一空不填，因为progress是不可数名词，第二空填the，make the most of…充分利用，句意：他在这么短的时间竟然取得这么大的进步真是让人惊讶。--一点不奇怪，他一直利用他的业余时间学习。选C。