根据提示词在横线上填入适当的句子完成对话.
A：______________________?(john)
B:He can play chess.
A:What club do you want to join?
B:________________________.(English)
A:________________________?(Mary)
A:Can her aunt play the violin?
B:________________________.(yes)
A:________________________?(help)
B:Yes,please.I can't find my math book.