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。

Childhoods were greatly changing, with fewer opportunities to spend time outdoors, researchers【小题1】 (observe).

The loss of exposure to the【小题2】 (nature) environment would have negative long-term consequences, they warned. Setting up【小题3】   “outdoor learning center” would help teachers, and help shape policies and strategy, they suggested. The report highlighted previous studies that showed that【小题4】 (busy) family lives, combined with an【小题5】 (increase) sense of fear in society, children were having fewer opportunities to explore their surrounding environment.

This was declining children’s social skills as well as risking   stifling (抑制) their long-term physical, emotional【小题6】     (develop) and wellbeing. Therefore, it was important that schools did not overlook the opportunities that outdoor learning provided【小题7】(bridge) this gap. “At the moment, if outdoor learning【小题8】(be) part of a school’s curriculum in England, it is largely because the teachers have recognized the value of it,” said report co-author, Sue Waite, a reader in outdoor learning at Plymouth University, UK.

With so much focus【小题9】 academic achievement, there can be pressure on teachers to stay in the classroom,【小题10】 means children are missing out on so many experiences that will benefit them through their lives.