---My uncle goes to climb Mount Tai every year.---Oh, really? He ______ climbing mountains.A.used to hateB.is used to hatingC.used to hatingD.is used to hate
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A解析本题考查固定结构辨析，used to do ：过去常常做某事；be used to doing ：习惯于做某事；be used to do sth ：被用来做某事。根据句意，应选A：哦，真的吗？他以前曾恨爬山的。