Jack isn't writing to his uncle.(用often改写）

Jack isn't writing to his uncle.(用often改写）
Jack isn't writing to his uncle.(用often改写）

Jack isn't writing to his uncle.(用often改写）
Jack often writes to his uncle

Jack doesn't often write to his uncle.

111、——The book isn’t easy for Jack to understand, is it? ——_选D，这是反意疑问句。在回答反意疑问句时，要特别注意英、汉两种语言习惯