Focus on Prepositions in use

Have a go at practising these preposition exercises from the Auto English website.
There are three exercises linked below. Just click on the links to go to the web page.

http://www.autoenglish.org/prepositions/gr.atin.i.htm

http://www.autoenglish.org/gr.in-on.htm
http://www.autoenglish.org/mistakes/mis-preps.i.htm