Here is the list of drills. Pick your choice. The drills are in PDF format and require Acrobat Reader to view. If you don't have the Reader, download a free copy by clicking the logo below.
Once you have the Reader installed on your computer, click on an unit below. A worksheet will be loaded onto your computer. Once a sheet is loaded, attempt each item by left-clicking on (dont'release the mouse key right away)the best option. You'll know immediately whether you've got the right answer or not. In case you get stuck, click on the clue label and work out the answer from there. If all else fail, click on each option in turn, there must be one right response.
(Number inside the brackets indicates the number of items in a drill.)
