给下列句子按(A～D)的顺序重新排序，使其组成一段完整的对话。(8分)

(　　)（1）What would you like to buy?
(　　)（2）I want to buy a pencilbox, a ruler, a notebook, two exercise books and three markers.
(　　)（3）Mum, shall we go shopping this morning?
(　　)（4）OK，let's go.