根据句意和首字母或汉语提示写出句中所缺单词，每空一词。

1. Zhijin Cave is known as the most beautiful underground  _______ (宫殿) in the world.  

2. Susan usually has  some pieces of b_______  and a bottle of milk for breakfast.       

3. In English the first name is the g_______   name.                                     

4. Spring is the best time for p_______  trees.                                          

5. — Excuse me. Are you f_______  now?                                                  

   — Sorry, I'm very busy.                                                              

6. It's ten  _______  (分钟) walk.                                                   

7. He  _______  (使用) a lift to go up and down every day.                            

8. Food must be  _______  (保存) in cool places in summer.                        

9. We often listen to our teacher _______  (认真) in class.                          

10. With the d_______  of computer science, more and more work will be done by computer.