1. 选择合适短语并用其恰当形式填空

depend on, due to, up to, take action, die out, be at risk,

in short, do one's part, have a role, wipe out

1. （1） Only in this way can we the enemy troops. 
3. （2） The government will make accommodations for three thousand people. 
5. （3） In the past decade, the administration hasn't in environmental conservation. 
7. （4） The old traditions are . 
9. （5） What we can do now is to reduce pollution. 
11. （6） The drivers were more likely to break the speed limit and of getting fined. 
13. （7） All the flights were put off the bad weather. 
15. （8） As a member of the international society, we to play. 
17. （9） Friendship means having someone I can . 
19. （10） , he was happy with that result.