I've ()my bag at homeA.forgetB.forgottenC.leftD.lost

I've ()my bag at homeA.forgetB.forgottenC.leftD.lost
I've ()my bag at home
A.forget
B.forgotten
C.left
D.lost

I've ()my bag at homeA.forgetB.forgottenC.leftD.lost
此题中,have表完成时,所以后面动词要用过去分词,排除A,D,这句话的意思应是“我把包落在家里了”,left（leave的过去分词）有遗忘、丢下的意思,贴合句意；而forgotten是忘记的意思,故选C.