14 Choose the best alternative.
1. My friends and I used to be active members of our school’s science club.
2. I used to think I would become a chemist.
3. People who are used to waking up early in the morning find it easy to start school at 8 am.
4. When we were little, every one of us used to dream about becoming the next great inventor. 
5. I’m still not used to reading books in English.
6. I think I’d better get used to studying in other languages.