【正确答案】：
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 POVERTY, DIRT AND DISORDER.
【题目解析】：他的大部分戏剧都与政治、经济、道德或宗教问题有关，因此可以称之为问题戏剧。他的戏剧有一种激情，也只有一种，即愤怒，对压迫和剥削的愤怒，对贫困、肮脏和混乱的愤怒。