these apples are very expensive.do you know ()?A how do they

Do you know how much these cakes are? do you know the boy the dictionary _____is very expensive. Do you know()apple are these? You are very selfish.Do you know? Do you know these? do you know these these apples are too expensive.they( )me 20 yuan A.spendB.pa How much are these books?You do not have to___them.They are Do you know what they are? 猜猜看Do you know who they are? Do you know whose kites they are? These books are very expensive.(改为感叹句) ()()()they are