Notice Ruth's, Simon's and the other people's answers to the question "What do you like shopping for?"
Their answers are not short are they? These are the kinds of answers you can try and make when you speak with your classmates.
Ruth, England
Something I like shopping for? I like shopping for everything. I like shopping for clothes. I like shopping for food. I like shopping for presents. Everything. Maybe the one exception would be shopping for DIY things: things like pliers and gardening tools and wallpaper. I'm not really interested in things like that but that's the exception. Other than that, everything.
Tips.
1. Repeat the question you were asked, like Ruth does.
2. Use examples
3. Answer more. Not only like but don't like etc...
4. Use "fillers" like "yeah", "well", "you know", "like", "kind of", "umm?" etc...