----How did he finish the work?----I hear that he did it A. in the ownB. on his ownC. of t

问题补充：

----How did he finish the work?----I hear that he did it

A. in the own

B. on his own

C. of the own

D. all his own

答案：

A. in the own

(答案→)B. on his own

C. of the own

D. all his own

解析：本句是意思是“他是怎样完成这项工作的？”“我听说他是独自完成的。”on one’s own是“独立地”“靠自己的力量”的意思，是固定用法。所以本题选B。