Tom tried to in German.
A. understand himself
B. make himself understanding
C. make himself understood
D. make himself understand
网友回答
A. understand himself
B. make himself understanding
(答案→)C. make himself understood
D. make himself understand
解析：考查短语：make + 宾语+ 过去分词作宾补，句意：汤姆努力使自己在德语上被理解。根据句意选C。