the problem is what we should dowith this machine 请问what在句子中

the problem is what we should dowith this machine 请问what在句子中 The problem is what we should do with this machine What we should do there is the first problem to solve 变成一个不定 the problem is (what we can do/deal with problem) the problem is that we are late.中that为什么不能换成what,可以讲一些基本的句子成 what is this machine( )-To make food. 这个句子对吗 What we should konw is the importance of knowledge. the problem is ------we should do-----him what are the cause of social problem and how should we solve I don't know what is wrong with the machine.We need an engin this is the first machine we made和 this is the first machine This is what we must