When I called at his home the other day I found him sitting on an armchair in his hands.

问题补充：

When I called at his home the other day, I found him sitting on an armchair, in his hands.

A. his head bury

B. burying his head

C. his head burying

D. his head to be buried

答案：

A. his head bury

(答案→)B. burying his head

C. his head burying

D. his head to be buried

解析：考查分词用法。Bury oneself in…把…埋在…；bury与him构成主动关系，与sitting形成并列关系。句意：前几天当我到他家拜访他的时候，我发现他坐在椅子山，把头埋在手里。