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1£®halfway adj.¡¡¡¡¡¡____________

2£®heritage n.    ____________

3£®inhabitant n.    ____________

4£®penguin n.    ____________

5£®rat n.    ____________

6£®chaos n.    ____________

7£®virus n.    ____________

8£®immunity n.    ____________

9£®collapse v.    ____________

10£®substantial adj.    ____________

11£®pest n.    ____________

12£®nutrient n.    ____________

13£®session n.    ____________