补全对话:根据上下文的意思在下面对话的横线上填上恰当的句子,将对话补充完整。(只写序号)(10分) A: ____________________________________ B: It’s sunny. A: ____________________________________ B: Good idea! A: _____________________________________ B: Yes, it’s very pretty. C: _____________________________________ A: Yes,how much is that dress? C: _____________________________________ A:OK,we’ll take it.