问题补充：
—My pet dog died. —.
A. Not at all.
B. Sorry to hear that.
C. Let me see.
D. Sounds great!
答案：
A. Not at all.
(答案→)B. Sorry to hear that.
C. Let me see.
D. Sounds great!
解析：句意：我的宠物狗死了，听到这个消息我很难过。听到别人的坏消息时要表达自己的难过之情，故选B。Not at all.别客气。Let me see.让我看一看。Sounds great!听起来很棒！都不合适。
