Umiejeś citat' i pisat' po-russki? :-)
Why is the answer: "Are you able to read and write" not accepted. I know it is a bit more formal than "Can you" or "Do you know how to", but is there some specific reason this answer is not accepted?
It's accepted, it should have worked.
Tak i privit
What about: "Do you can read and write?" ?
Yeah, I'm afraid that's not really English...
Can you read and write?
Can is an auxiliary verb which mean it can (heh) switch places with the subject (something non-auxiliary verbs can't), so there's no need for do.