根据汉语完成句子

根据汉语完成句子
     同义句转换：
I don't know how to work out the math problem.
I don't know ___  ___ ___ ___ ___ the math problem
I don't know what to say.
I don't know what ___ ___ say.
根据汉语完成句子
1.这是成为一名好的英语学习者的秘诀之一
This is ___ ___ ___ ___ of becoming a good English learner