题目内容：

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。

Instead of just using their billboards (广告牌) for marketing, McDonald’s is putting their signs to good use by 1. (attach) “bee hotels” to the backs of roadside ads. As 2.means of helping decreasing honeybee populations in Sweden, the restaurant chain 3. (start) drilling holes into their own billboards since July so that the structures can provide shelter 4. honeybees. 5.(addition), the Swedish branch of the company has partnered with outdoor advertising firm JCDecaux in order to attach small honeybee 6. (house) to the backs of other unused roadside billboards as well.

This is not the first time that McDonald’s has used tiny structures to help  7. (struggle) honeybees. In addition to several of the Swedish branches building beehives (蜂巢) on the rooftops of their restaurants, the company sold a fully-functioning beehive that was built inside of “the world’s  8. (small) McDonald’s” back in May. The “McHive”9.(design) by award-winning artist Nicklas Nilsson sold for more than $10,000, all of 10. was donated to charity. Now, McDonald’s has partnered with the same designer in order to produce as many of the “bee hotels” as possible.