the problem is what we should dowith this machine 请问what在句子中充当什么成分

what is the problem What is the problem in the story? what is the problem in the problem-by-problem what is the chinese meaning? What the hell is your problem? What is the problem?的中文意思? what is the man problem 意思 What is pro-form?the linguistic problem the problem is what is right what做什么语 what is environment problem what is the problem between parent and their children、 是什么意思? 用英语回答：What is the biggest problem China faces Please tell me what's the problem.Please tell me what's the problem.Please tell me what the problem is. what the matter is 和 what the problem is 有什么区别? what is your problem 翻译 what is your biggest problem when learning English,and what solution do you suggest to the problem do you have any problem.Which is correct.Which is correct?please explain1)Do you have any problem.2)Do you face any problem3)Is there any problem.(what is the instance for there.)4)Is the car any problem. loving you has never been the problem .what is troubling me is that loving