great efforts to practice English Mary has made much progress in spoken English.A. To ma

问题补充：

great efforts to practice English, Mary has made much progress in spoken English.

A. To make

B. Having made

C. Made

D. Making

答案：

A. To make

(答案→)B. Having made

C. Made

D. Making

解析：

这题考查现在分词的完成式做原因状语从句的用法，句意是：因为努力练习英语，她在口语上已经取得了很大的进步，因为“努力”发生在“进步”之前，所以用现在分词的完成式。选B。