Fill in the Blanks Exercise 1. PrepositionsOnline version Exercise 1. This is a gap test on prepositions of time and location/space. The students have to fill in the gap using "at, on or in" by Amy Milton 1 in on in in on in at on at at on is 1 . Do you live Belgium ? 2 . The hospital is the end of the street . 3 . I always eat breakfast the morning . 4 . He was riding a bycicle . 5 . Mars is a planet our solar system . 6 . We saw her the museum . 7 . She put the cup the kitchen table . 8 . The story will probably be published the newspaper . 9 . There were a lot of kids the playground . 10 . They never play this song the radio . 11 . She is the phone talking to her boyfriend , I think she mad at him .