Преобразуйте прямую речь в косвенную. Nick: What are you doing, Mary? Mary: I am writing a letter to Lucy. Nick: Writing a letter?! You cannot read. Mary: Never mind. Lucy cannot read.
Nick said what Mary was doing that moment. Mary answered that she was writing a letter to Lucy. Nick asked to repeat if she was writing a letter. he added that Mary could not read. Mary answered that Lucy couldn't read.