——Do you know who left the computer on all night long?——It seems that Tom is. He played co

问题补充：

——Do you know who left the computer on all night long?

——It seems that Tom is. He played computer games yesterday afternoon

A. blaming

B. blamed

C. to blame

D. to be blamed

答案：

A. blaming

B. blamed

(答案→)C. to blame

D. to be blamed

解析：考查固定词组：be to blame表示某人应该被责备，固定词组，这里是主动表被动，句意：--你知道昨晚谁把电脑一直开着？--好像是汤姆的责任，昨天下午他在玩电脑游戏。选C。