If you want to learn or hear more about something. it means you have an in it.

On his way to the airport,it________him all of a sudden that he had forgotten his passport.[ ]

Is Tom still smoking— No. By next Saturday he ____ for a wholemonth without smoking a single cigarette.

I think maths is not ________ science.

29. About one in ten computer game players show signs of addictive behavior that have negative effects on their family, friends and school work , according to a new study.