http://grammar.ccc.commnet.edu/grammar/quizzes/preposition_quiz2.htm

http://grammar.ccc.commnet.edu/grammar/quizzes/preposition_quiz1.htm

http://grammar.ccc.commnet.edu/grammar/quizzes/cross/cross_prep.htm

http://grammar.ccc.commnet.edu/grammar/quizzes/cross/cross_prep2.htm

http://grammar.ccc.commnet.edu/grammar/quizzes/cross/cross_prep3.htm