After working for five years in the countryside, he is now used to(do) ______ physical labor.

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问题 After working for five years in the countryside, he is now used to(do) ______ physical labor.

选项

答案doing

解析 “be used to doing sth.”意为“习惯于做某事”,这里to为介词,后接名词或动名词。
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