按要求完成句子，每空一词。

1. We go swimming every afternoon. (改为祈使句) 

    ______ ______ go swimming every afternoon.

2. My sister is twelve years old. (就画线部分提问)

    ______ ______ is ______ sister?

3. The elephants are friendly, so I like them. (改为同义句)    

    I like elephants ______ ______ ______ ______.

4. The story is a little interesting. (改为同义句)    

    The story is ______ ______ ______.

5. There are five people in my family. (改为同义句)

    I      __  a family   ___     five people.

某工程项目的双代号网络计划如图5-11所示。

该项目采用预制钢筋混凝土桩基础，共有800根桩，桩长9m。合同规定：桩基分项工程的综合单价为180元/m；预制桩由业主购买供应，每根桩按950元计。计算甲建筑公司桩基础施工应得的工程款是多少？（注：计算结果保留一位小数）