— Mum, would you please buy me an MP5 player?

— If you can help do some housework the whole vacation，you ____ have one as a reward.

A．must

B．need

C．would

D．shall

【问题1】 请结合图2-6所示的网络拓扑结构图及题干的相关描述信息，将图2-7所示的配置文件中的(1)～(4)空缺处的内容填写完整。