根据短文内容，用方框中所给单词的适当形式填空，每词限用一次。

Joy: Hi, May, are you free next week?

Mary: Hmm, next week is quite for me.

Joy: Really? How come?

Mary: I have dance and piano lessons.

Joy: What kind of dance are you ?

Mary: Oh, swing dance. I have class  a week, every Monday.

Joy: How often do you have piano ?

Mary: Twice a week, on Sunday and Friday.

Joy: Well, how about Tuesday?

Mary: Oh, I have totennis with my friends. Do you want to come?

Joy: Sure!