1 . Up to now lots of tests ________ (prove) that the system works.   (所给词的适当形式填空)

2 . It is our responsibility to seize every opportunity to educate everyone about global warming, along with its causes and impacts. （英译汉）
_______________________________________________________________________________

3 . You will be surrounded by evidence of four different groups of people who took over at different times throughout history. (英译汉)
_______________________________________________________________________________

4 . These bad habits, if left unchecked, could lead to more serious ones when they become adults. （英译汉）
_______________________________________________________________________________

5 . _________ is often the case, senior three students feel anxious and upset before important examinations. (用适当的词填空)

6 . 她受到网友的启发，决定成立一个IT俱乐部来教年长一些的人们学习使用电脑和互联网。
She _________ the people she met online that she decided to start an IT club to teach older people how to use computers and the Internet.

7 . 只有学会和大自然和谐共处，我们才不会成为野生生物和地球的威胁。
_________ we learn to _________ wildlife and to our planet.

8 . 然而，政府并没有打算停止这些保护项目，因为对藏羚羊的威胁依然存在。
The government, however, does not _________ stop the protection programmes, _________ the threats to the Tibetan antelope have not yet disappeared.

9 . 这些国家不仅找到了一条不以牺牲古迹为代价的未来发展之路，而且明白了多个国家合作创造美好未来的可能性。
_________ the countries found a path to the future that did not _________ the relics of the past, _________ they had _________ learnt that it was possible for countries to work together to build a better tomorrow.

10 . 新旧更替的时代已经到来，在走向未来的过程中，我们不可能将过去的一切都保存下来。
_________ the old must _________ the new, and it is not possible to preserve everything from our past as we move towards the future.