Advanced Language Practice

Advanced Language Practice
Help
On every page you can see some buttons, that will help you to navigate
and do exercises.
Navigation buttons:
- back - go to the previous page;
- next - go to the next page;
- last unit - go to the previous unit;
- next unit - go to the next unit;
- explanation/exercises - go to the explanations/exercises of the unit;
- contents - go to the contents (from wich you can go to the unit you wish);
-exit -exit the document;
- question - go to this help text.
Buttons in exercises:
- check - check whether your answers are correct. >>>>>