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）

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.