帮我区分on holiday ,on holidays,at the weekend,at weekends

问题描述:

帮我区分on holiday ,on holidays,at the weekend,at weekends
jim wants to do sports on Saterdays and Sundays.
同义句jim wants to do sports on________.

jim wants to do sports on weekend
on holiday 在休假
at the weekend 在周末(星期六和星期天)
at weekends 每周末地