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When he was young, he used to hard at his lessons.A.devote to workingB.devote hi

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When he was young, he used to hard at his lessons.A.devote to workingB.devote hi

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