1 . Because of climate change, the ice that polar bears depend on for survival ____ (disappear) slowly. (所给词的适当形式填空)

4 . 如果你能给我一些实用的建议，我将非常感激，我期待你的早日回复。(汉译英)
______________________________________________________________________________________________________

5 . Owing to the severe environmental pollution, this species of bird is ________ (减少) in numbers every year. (根据汉语提示单词拼写)

6 . 得知你将去国外深造，我写信告知你一些必要的注意事项。
Learning that you will go abroad for further study, ________________.

7 . The man of high rank is ______ (批评) his secretary who has made a serious mistake. (根据汉语提示单词拼写)

8 . 毫无疑问地球正变得越来越暖。（汉译英）
_______________________________________________________________________________

9 . These volunteers are ________________ (商定) with each other about garbage sorting. (根据汉语提示单词拼写)