1 . 面临气候变化带来的多重挑战，所有相关各方应保持联系，加强合作，共同应对由此产生的对生活方方面面的影响。 (contact) (汉译英)

2 . 因为出乎意料的暴力事件频发，出租车公司必须向乘客确保出行的安全。（assure）(汉译英）

3 . 选词填空

well off;   be keen on;   be ashamed of;   in all ;     on behalf of ;   refer to

1. They would never _________ that matter again.
2. You should _________ yourself for telling such lies.
3. In addition, a hero must be optimistic and diligent and_________ his hard work.
4. It won't be long before the Chinese people will become _________.
5. Please allow me to thank you for your offer of help _________ my colleagues.