do one's best to do sth.
try one's best to do sth.
do one's endeavor to do sth.endeavor 英[ɪn'devə] 美[ɪn'devə] vt. 尝试,试图; 尽力,竭力; n. 努力,尽力; [例句]We made an earnest endeavor to persuade her.我们郑重其事地努力说服她。[其他] 第三人称单数:endeavors 复数:endeavors 现在分词:endeavoring过去式:endeavored 过去分词:endeavored
make every endeavor to do sth.
do/try one's best to do sth.