已完成任务用英语

I've accomplished what need to be done by myself

Mission completed或Task finished

I have finished my tasks that I should to do

Mission Accomplished.这是最好的了。

到上个月末他已经完成了任务了英语：He had finished the task by the end of last month

我已经完成了自己该做的任务.I have completed the task that I should do.I have completed the task which should be done by myself.I have completed the task which I have to do.都可以的 希望可以帮到你望采纳

assignment; mission; task; undertaking; job;