He made up his mind to finish the task by himself.
人工翻译,望采纳~
他下决心自己完成这个任务
He is determined to finish the task
南京政府及其代表团是否下这个决心,有你们自己的自由。
The nanking government and its delegation are free to make up their minds or not to.
在下星期前完成这个任务我需要20个人。
We'll need about 20 hands to finish the job by next week.
如有疑问请继续追问,望采纳,谢谢,您的采纳是我的力量!
I make my decision to finish the task/mission by myself
he made up his decision to finish the task by himself