Hi, 
 
As far as I know, the common questions they ask are the following:
 
 introduce yourself 
 
How would you teach a lesson about ( and they ll provide you with the topic such as aa grammar lesson / a play by shakespeare ....) 
 
what yould you do if you have a multi- level class?
 
how will you deal with week / talkative / lazy / naughty .... students ??
 
 they may give you a lesson and then ask how you would start teaching such lesson  ( warm up) ?
 
 
 ( the interview questions depend on where you are going to teach ( the country itself or if it is a primary or secondary school or university ) 
 
 
Good luck