You visit yourgrandmother on Sundays. Sundays这里的“s”为什么要加,如果不加“s”,这句话对吗?

Where did you visit? Where will you visit?what will you visit? Where did you visit or what did you visit Do you visit ____Great Wall? Have you-------(visit) Garden City? Did you enjoy your visit? we are looking forward to ( ) to our country . visiting; visit; a visit ; you visit do you want to visit hainan this year ?为什么用to visit而不用visit Could you tell me who ( ) tomorrow morning?A.you would visit B.will you visit C.you will visit D.would you visit _______ your parents on holidays.A You'll visit B You would visit C You should visit visit visit where are you going to visit? ( )are you going to visit your aunt? where _do you want to visit? where will you visit?这句话对吗? when__ you visit your grandparents 动词填空 What websites do you usually visit?Why?