The young mother walked off leaving the little boy in the room. A. cryB. crying C. crie

问题补充：

The young mother walked off, leaving the little boy in the room.

A. cry

B. crying

C. cried

D. to cry

答案：

A. cry

(答案→)B. crying

C. cried

D. to cry

解析：本题考查非谓语动词。句中宾语the little boy与补足语cry之间为主动关系，故用现在分词。句意：年轻的母亲走了，留下哭泣的小男孩在房间里。