【题目】With all your energies ______ the study of French, you will master the language.
A. concentrated B. concentrating
C. concentrated on D. concentrating on
在线课程【答案】C
【解析】
考查动词短语和过去分词。句意：把全部精力集中在学习法语上，你就会掌握这门语言。动词短语：concentrate on集中精力于，全神贯注于。此处是with引导的独立主格结构，“with+宾语+过去分词”做条件状语，energies和concentrate之间是被动关系。故选C。