用适当的词填空,补全对话
A:Hi,Tom.Lucy's birthday is coming.What___________we do for her?B:Well,we can have a birthday partyA:What can we do____________the party?B:We______________sing and dance to discoA:Can you?But you_____________sing two weeks agoB:I can sing now,but I___________sing very wellA:Oh,I see