单词拼写。
1. His illness a_________ for his being absent from work.
2. I climbed into bed and p____ the blanket over my head.
3. Darwin's t_____ of evolution(进化)is based on the survival of the fittest.
4. The clouds have b_____ out the sun.
5. You must first s______ their permission before publishing their names.
6. The director told the actors that he would shoot the _______(场景)in the morning.
7. The (混合) of the two drinks tastes good.
8. Can't you see the mountains in the ________(远处)?
9. The garden is ______(围绕) by a high wall.
10. They often ______(聊天) online.
时，土为（）。