已经凭领取邮件通知单、包裹详情单领取的邮件，交回邮局改寄或退回应（）。
A.可以办理
B.不予办理
C.收寄处理
D.退回处理
参考答案：B
— Did you go to the open-air concert?
—No. We ____. but we spent too much time shopping.[ ]
A. could have gone
B. must have gone
C. can't have gone
D. shouldn't have gone
Alzheimer病
