题目内容
【题目】
When he was young, he used to hard at his lessons.
A. devote to working
B. devote himself to working
C. be devoted to work
D. devoted to working
【答案】B
【解析】used to do something曾经常;devote oneself to doing something致力于做某事,献身于做某事。
练习册系列答案
相关题目