speak about your hobby or favourite pasttime and find out who else in ypur class is interested in the same activity

I have always been interested in ... .
I spend a lot of time (doing something) ... .
I have a big collection of ... .
there is very little that I don't know abour... .
It's a rether (un)common hobby.
I think it's an exciting pastime.

I have always interested in studying.I spend a lot of time watching tv.I have big collection of books.there is very little that I don't know about sciene. it's a rether uncommon hobby.I think it's an exciting pastime.