Теория:

Study the information how to use prepositions and verbs.
   
There are no rules, you must remember these phrases with prepositions.
 
  
Belong to
Ask for
Pay for
Happen to
Speak/talk to
Listen to
Thank somebody for
Think about/with
Write to
Call/ phone – no prepositions
Depend on
Compare with / to
Compete with
Complain about
Concern about / with
Concentrate on
Consist of
Turn to
Wait for
  
Examples:

We are waiting for you now.
It happened to him many years ago.
It depends on different factors.