The perspective in which you view the problem is ______ mine

The perspective in which you view the problem is ______ mine The problem is which one you want to choose This is the way in which they solve the problem.这里的in which可 The pen ______he is writing is mine.A.with which B.in which The problem is difficult ______. The book ______ the right is mine. --the problem is too difficult ,can you show me ______ ----- Hold you in my arm all the world is mine! The problem which you want to ask is difficult 这里的which好像不是是 The problem which you want to ask is difficult 这里的which 是不是做 The pen _______ which he is writing is mine. A with B in C o The house the window of which is broken is mine.