根据首字母提示填空。

1. I'm sorry to keep you waiting for so many h______.

2. Please remember me to your families with my best w______.

3. What t______ do you go to bed?

4. What time does your school u______ start in a day?

5. Remember to brush your t______ twice a day.

随着电信业买方市场的（）以及科学技术的发展，若企业仍然只是（）的适应需求，就必定会失去市场先机，最终被市场所淘汰。