Complete the sentences with the correct prepositions.
1 Don't worry about looking for that pen. I'm sure it'll turn up somewhere.
2 Look, I hate sports, so there's no way you can talk me _____ playing tennis tomorrow!
3 It's a great film. It starts as a thriller, but after about 15 minutes, it turns ______ a comedy!
4 I looked on the internet for hours, and then suddenly I came _______ something really interesting.