题目

- When he was a little boy，he ______ on the farm. 　 A. used to working 　 B. used to work C. got used to work 　 D. was used to work 答案：B 解析: used to do sth.意为"过去经常做某事"。be used to do sth.意为"被用来做某事"。be/get used to doing sth."习惯于做某事"。

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