阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

The Netherlands needs thousands of new houses because the country ___(1)__ (have) a growing population. Anyway, it may not have to build all those houses. Some of ___(2)____ (they) can be printed.

____(3)___(recent), the government has been working together with a university and some building companies(公司) to build houses that are fully 3D-printed. As volunteers, an old couple has become the first people in Europe to move into such ___(4)__ house.

With two ___(5)___ (bedroom) and a big living room, the house was built layer(层) by layer, using a huge 3D printer and special cement(水泥). After being printed out, the house ____(6)____ (carry) by a truck to the building site, and a roof (屋顶) and windows were later added. It took around 120 hours ___(7) __ (finish) this 3D-printed house. Usually, it takes about one or two years to build a house in the ___(8)___ (tradition) way.

The couple will live ____(9)____ this house for six months, with a monthly pay of 800 euros(欧元). The cost seems a little bit high, but they think it is much cheaper ____(10)___ living in the hotel.