—We don’t know who stole the book. What’s your opinion?
—Jack is considered it.
A. having done
B. to have done
C. doing
D. to do
网友回答
A. having done
(答案→)B. to have done
C. doing
D. to do
解析：consider第一意为考虑，固定结构为consider doing; 第二意为认为，常见的短语为consider as,常用于被动语态，结构为be considered to do /as ,结合句意，此处consider此处意为认为，另外做这件事（偷书）发生在谓语动词considered 之前，故用其完成式to have done,故选B