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When he was young, he used to hard at his lessons. A. devote to working B. devot

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When he was young, he used to hard at his lessons. A. devote to working B. devot

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

试题答案

D

解析: