1.The study says social and economic issues are partly to blame.
be to blame 該受責備,應承擔責任
This information confirms me in the belief that he is to blame.
這一消息使我堅信他該受到責備 。
It's the coalition forces who are to blame for the continuation of the war.
聯合部隊應當對戰爭的延續負責 。