Conjugation of do one's best [v.]
-do one's best
Ido my best
youdo your best
hedoes his best
wedo our best
youdo your best
theydo their best
Idid my best
youdid your best
hedid his best
wedid our best
youdid your best
theydid their best
Iwilldo my best
youwilldo your best
hewilldo his best
wewilldo our best
youwilldo your best
theywilldo their best
Ihavedone my best
youhavedone your best
hehasdone his best
wehavedone our best
youhavedone your best
theyhavedone their best
-doing one's best
-done one's best