In 1998 when he was only 19 Bill to 5 years in prison for his acts of violence.A. sente

问题补充：

In 1998, when he was only 19, Bill to 5 years in prison for his acts of violence.

A. sentenced

B. had sentenced

C. was sentenced

D. had been sentenced

答案：

A. sentenced

B. had sentenced

(答案→)C. was sentenced

D. had been sentenced

解析：句意；在1998年，当Bill 19岁时，他被判5年监禁因为他的暴力行为。sentence sb to判某人刑，这里Bill与sentence之间是被动关系，又有明确的过去的时间所以用过去式，故选C。