PREPOSITIONS OF PLACE AND TIME

Here are some exercise about prepositions:

http://www.english-4u.de/prep_of_time_ex1.htm

https://www.ego4u.com/en/cram-up/grammar/prepositions/exercises?02

http://www.learnenglishfeelgood.com/prepositions-of-time3.html

http://saberingles.com.ar/curso/lesson09/06.html

http://www.really-learn-english.com/at-in-on-prepositions-of-place-exercise-01.html

http://www.really-learn-english.com/at-in-on-prepositions-of-place-exercise-02.html

http://www.really-learn-english.com/at-in-on-prepositions-of-place-exercise-03.html