Onu zamanında bitirmek için elinden geleni yapacaktır.
- He will do his best to finish it on time.
Sanırım o elinden geleni yapacaktır.
- I think he will do his best.
One of us needs to verify the source. — Will do, but I could use some help.
... We have not done as good of a job in the past in helping ...
... So, they must have done so much research. ...