i don't think it's my __that the TV blew up.i just turned it on;that's all.A errors B mistake C faults D duty选B 为什么其他的不行

i don't think it's my __that the TV blew up.i just turned it on;that's all.
A errors B mistake C faults D duty选B 为什么其他的不行

答案是：fault
习惯用法是：I made a mistake .
It's my fault.