Sally and Amy/play tennis/ Tuesday, Fridays and Saturdays.
Sally and Amy play tennis/ 3 times a week.
Sally and Amy/meet with friends/once in January, March, May, July, August and December every year.
Sally and Amy meet with friends five times a year.
John/ have a business meeting in Germany/the first Friday every month.
John has a business meeting in Germany once a month.
Sally and Amy/watch TV/every morning and every evening
Sally and Amy watch TV twice a day.
John/play tennis/Mondays and Thursdays
John plays tennis on Mondays and Thursdays/twice a week.
John/practice the piano/Saturdays.
John practices the piano on Saturdays/once a week.