Work out the answers to each question below and fill in the boxes. Once you have filled in all the answers, click
on the button to find out which
questions you have answered correctly. If you have answered
all the questions correctly, then
will appear and you should move on to the next question.
Otherwise either or
will appear, depending on how many mistakes you made.
Try correcting your answers, then click to
check whether your new answers are correct. You can check
your answers as many times as you want. If you can't work out the right answers then
click on to get some help.
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Produced by A.J. Reynolds March 2004