Which is your pen是不是就等于Which pen is your pen?

which is your pen的答句 Which is your pen?The pen on the shelf is my pen.问句里的which是对 Is this your pen? That is your pen that is your pen. My pen is {broken} ｛ ｝｛ ｝with your pen? 把下列句子改成复数The leaf is turning yellow.Which is your pen?What i This not is your pen,your pen is white.改错 Is this a your pen? __(这儿)is your pen what is your pen colour is dave your pen friend?