根据每句话的意思以及首字母填入恰当单词，使得句意连贯。
1. I'll send you a c__________ of this book.
2. A cabinet sits in a c__________ of the room.
3. Your answer is not c__________.
4. In our c__________, it is rude to ask someone how much they earn.
5. Some wild animals are in d__________. We should try our best to protect them.
6. It's getting d__________. We should go home now.
7. We have set the d__________ for the wedding.
8. It is a matter of life and d__________ to them.
9. I have no d__________ in doing the math exercise.
10. I like watching D__________ channel very much.
