是spend the weekends 还是spend weekends

是spend the weekends 还是spend weekends 是“at the weekends"还是“at weekends"? volunteers spend two weekends cleaing the hill before the co 6.How do you spend the weekends at the college? How do you____ last summer weekends?(spend) How does spend your weekends.改错 How do you spend your weekends? your spend does how mother weekends her(?) How___Li___his weekends?(spend)适当形式怎么填 是on the weekends还是at she weekends 英语中,是in weekends 还是in the weekends ,急! 到底是on weekends还是at weekends