How was I to know

How was I to know How was I supposed to know that? When I was able to know how to cherish 翻译 i want to know how to learn English,I was puzzled,tell me th I know how to cook how was i supposed to know .我想知道这是一个什么句式? i want to know how to do和i want to know how to do it. Sure.I know how to do that. I know just how to fake I do not know how to do I don't know how to I know how to ask problem