Having behaved himself so well in prison he was in the end.A. set upB. set freeC. set ou

问题补充：

Having behaved himself so well in prison, he was in the end.

A. set up

B. set free

C. set out

D. set off

答案：

A. set up

(答案→)B. set free

C. set out

D. set off

解析：按题意这里要用set free ,此处是被动语态,所以用 was set free.