what is hard to do good in all one's life and never do bad.是一种什么结构?能不能说What is hard to answer this question.

What I can do is to keep working hard为什么要用what啊? what is hard to do good in all one's life and never do bad.是一种什么结构?能不能说What is hard to answer this question. What is hard is to do good all one's life是什么结构急就 What is hard is to do good all one's life do u think that english is hard?if so,what so hard about it?if is that hard,do u still want to learn english? 句子what I can do is to study hard.为什么要有to? What subjects do you find it hard to listen to?it 和hard之间为何不加is?如果断句的话应该是下面哪种？What subjects do you find，it hard to listen to?What subjects do you find it hard to listen to?What subjects do you find it hard What I must do is study hard.这里的study为什么不加to呢. it is hard for me too. what i suppose to do求翻译 i don't know___with this problem it is too hard 为什么是what to do 不是how to do? why it is so hard to do The maths problem is so hard,I really don't know ____.A.how to do it B.how to do C.what to do Intelligence _______ what it takes to do anything well.A.and hard work is B.plus hard work isIntelligence _______what it takes to do anything well.A.and hard work is B.plus hard work is C.other than hard work is D.along with hard work are what I can do is studying hard正确吗 英语翻译翻译中文:He knows how hard it is to say No to our friends who want us to do what they do. all what i should do is to study hard.请问all what i should do是什么从句?是不是语法错了，不需要就all就成句啦？ ()is to do good all one's life and never do anything bada.whichever is hardb.no matter what is hardc.what is hardd.all what is hard为什么答案是c?别的为什么都不对?请给与解释 it is hard to+Ving还是to do sth