Questions and Answers：Give a brief answer to each of the following questions in English.As a realistic dramatist, what issues did Bernard Shaw takes as his subjects?
STRUCTURALLY AND THEMATICALLY, SHAW FOLLOWED THE GREAT TRADITIONS OF REALISM. AS A REALISTIC DRAMATIST, HE TOOK THE MODERN SOCIAL ISSUES AS HIS SUBJECTS WITH THE AIM OF DIRECTING SOCIAL REFORMS. MOST OF HIS PLAYS ARE CONCERNED WITH POLITICAL, ECONOMIC, MORAL, OR RELIGIOUS PROBLEMS, AND, THUS, CAN BE TERMED AS PROBLEM PLAYS. AND HIS PLAYS HAVE ONE PASSION, AND ONE ONLY, I.E. INDIGNATION, "INDIGNATION AGAINST OPPRESSION AND EXPLOITATION, AGAINST HYPOCRISY AND LYING, AGAINST PROSTITUTION AND SLAVERY, AGAINST POVERTY, DIRT AND DISORDER."
