根据句意及字母提示,填入恰当的单词

根据句意及字母提示,填入恰当的单词
1)the library is open on w_____.It isn't oen on weekends?
2)I can't go to the movies with you,because I have to go to my piano l______
3)I don;t like the color of this T-shirt.Could you show me a___ one?
4) I love music .Could you please take me to the c____tonight?