120.2 put in at, on or in where necessary. leave an empty space if no preposition is necessary. 1. a. i'll see you _on_ friday. b. i'll see you next friday. (no preposition) 2. a. what are you doing saturday? b. what are you the weekend? 3. a. they often go evenings. b. they often go out sunday evenings 4. a. do you work wednesdays? b. do you every wednesday? 5. a. we usually have a holiday the summer. b. we often have a short holiday . 6. a. pauline got 1991. b. pauline got married 18 may 1991. c. chris is getting married this year.