How do I buy it off

How do I buy it off how should I do? how should I do it? turn on it和turn it on;turn it off;turn off it用法 how to do it how many things do i want to buy翻译 just test it,how should I do? .How should I do it?急用. How do I turn on it? I do not know how I can do it how do you want to (花费 )it it ( ) much to buy a house 求翻译 How much separate pants and how do I buy? but I do not konw how to do it What can I do for you Yes,please.I want to buy a book .how t