Submitted by Anonymous (not verified) on Tue, 01/19/2010 - 12:42.
very good exercises but there are some that didn't allow me to check.. this is necessary for me because I'm practising for a final exam in february and I need to check the exercises in order to check my knowledge... and if you can put the exercises according to people's different levels.. thank you
very good exercises but there are some that didn't allow me to check.. this is necessary for me because I'm practising for a final exam in february and I need to check the exercises in order to check my knowledge... and if you can put the exercises according to people's different levels.. thank you