I really know litte about computer.和It is about 5,000 yuan f

I really know litte about computer.和It is about 5,000 yuan f I really do not know about it I really don't know what ___(say)about it I really don’t know ______ about it. really?what is it about. 1.This vase is very v____.It cost me about 5,000yuan. this is a subject .I know nothing about it I really don't know ( ) about it A.what to d I really care about “I really care about That is all you know about it I relly don't know ( ) about it.