— Is there a department store around ________ I can get a birthday present for my brother?

— Yes, just across the street. [ ]

A. which  

B. where

C. on which  

D. that

接受定金的一方当事人不履行合同时，应当（）。

A．返还定金

B．支付违约金

C．支付赔偿金

D．双倍返还定金