选择恰当的一项，完成对话。Lucy:1 Lily:Thankyou.Lucy:Aretheynew?Lily:No. 2 Lucy:They'renice!Lily:3A. Isthisas

Lucy: 1              
Lily: Thank you. 
Lucy: Are they new? 
Lily: No. 2              
Lucy: They're nice! 
Lily: 3               
A. Is this a sweater?            
B. It's old.  
C. They're old.  
D. Do you like these pants?       
E. I like your pants.     
F. OK.            
G. Thanks.