根据句意和首字母补全单词。
1. They cannot drink a_______ eat in the library.
2. We take the t______ to Nanjing this weekend.
3. Nancy likes to r_______ bikes in the park.
4. Cinderella tries on the shoe, it f_________.
5. It's neck is very long,it is the g______.
6.Smoking is b____for our health.