A lie is a sentence or words in which the speaker speaks of what he considers true (he may not know the truth of the matter himself) as untrue to the listener, so that the listener believes that "there is nothing" Or to say that something that really exists is "non-existent. ". Which of the following are lies (). ['Xiao Zhang was diagnosed with cancer and he did not tell his family. After actively adjusting his schedule and life, his body recovered and the lesions disappeared. At this time, he told his family that he had stayed away from cancer.', 'Xiao Li, a poor family, has been earning living expenses after working out of class. When he was a senior, he wanted to apply for a graduate student.', 'Yang told Xiao Qian that she and her classmate Xiao Chen could find a job in the field, Xiao Qian gladly told Xiao Chen. Later Yang asked the two to work in a factory in a certain place, the wages were very low and there were no rest days, Xiao Chen Think that small money has cheated her.', 'Old Liu met the old classmate when he visited the old place again and asked an old acquaintance. The old classmate told him that the old acquaintance was sick and left.']