补全对话
（T=Teacher，M=Mary，J=Jim，B=Bruce）
T：Hi，boys and girls！ ________can you do？Mary，can you sing？
M：No，I________．But I can_______the violin．
T：Oh，_______can play the violin！ _______！ What can you do，Jim？
J：I can sing and play_______guitar．
T：OK！You and Mary can________to join our music club．Who can play the______？
J：I_______Bruce can play the piano．
B：No，I can’t．______I can sing and dance．