Mandarin IGCSE past papers

I don't know if anyone finds this sort of thing useful, but there are some old IGCSE exam papers at 

http://www.cie.org.uk/qualifications/academic/middlesec/igcse/subject?assdef_id=843

You may find it interesting if you're trying to guess what level you're at. I think it's telling me that I'm not GCSE level yet (exams taken when you're 16 and have been learning through secondary school, though I hear the IGCSE is harder than the normal GCSE).