who plays father 和who play brother and sister 中的play为什么一个加s一

who play brother sister. 单词plays sport play为什么加s who play football?和who plays football?哪一个对,需要联系上下文吗? He plays basketball every day. play为什么加s he plays football well为什么play加s "He plays tennis"中play为什么要加s? and together sister play brother怎么排列 who is father's brother Tom and his sister play volleyball.这里的play要加s I am interested in who play guiter这个play可以加ing吗 为什么 your mother and father who play more important roles in your who is cousin's father's brother'father?