Сomplete the sentences. There are extra options you DON'T need to use

• in
• of
• with
• by
• out
• around

1. After several months in a new country she managed to get
   [ ]
   all the rules and customs of her new neighbourhood.
2. How on earth did you come up
   [ ]
   this ridiculous idea?
3. Paul's trying to make some useful acquaintances to branch
   [ ]
   into educational center.
4. We'll probably take part
   [ ]
   this demonstration unless it's prohibited.