问题详情

The reason for Anderson"s sarcastic humour was that he ______.
A．envied the writer for having published a novel
B．had had a volume of poetry rejected by a publisher
C．had not been able to fulfill his early ambitions
D．was bored when there was not enough news to fill the paper此题为多项选择题。请帮忙给出正确答案和分析，谢谢！