Question

【题目】When he was young, he used to __________ hard at his lessons.

A. devote to working B. devote himself to work

C. be devoted to work D. be devoted to working

Answer 1

【答案】D

【解析】试题分析：当他年轻的时候，他常常刻苦的学习功课。Used to do“过去常常”，devote oneself to doing或be devoted to doing致力于做…，所以选D。