根据语境,补全单词。

1. The room is so dirty. Let's give it a t_____ cleaning.

2. A number of nations have already been in armed c_____ over water, and

   reduced rainfall in the west of the US has resulted in huge forest fires.

3. A c_____ needle always points north.

4. The flight's d_____ time was 10am.

5. The sea turtle is an e______ species.

6. The brain c_____ of grey and white matter.

7. In the article, his privacy was e_____ to the public.

8. I haven't contacted Tom for ages. It is b_____ my dreams to have received

   a letter from him.