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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 求权威解答,不肯定的别瞎掺和.

题目详情
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 求权威解答,不肯定的别瞎掺和.
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答案和解析
he used to devote himself to working hard
he used to be devoted to working hard
他过去常常很努力的工作
devote ... to 强调动作
be devoted to 强调状态
看样子是要选d啊