The country life we ______. The differences between rural and urban areas are disappearing.A.were used to have changedB.used to changeC.used to changingD.were used to has changed
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D解析考查句子结构。Be used to sth/doing sth习惯于…; 定语从句we were used to修饰先行词the country life.句意：我们习惯的乡村生活已经改变了。农村与城市的差别正在消失。