—We don’t know who stole the book. What’s your opinion? —Jack is considered it.A. having

问题补充：

—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

答案：

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