-----I forget the name of an old school friend at the party.
----- . It must have been very embarrassing.
A. Take it easy
B. That’s too bad
C. Nothing serious
D. Don’t mention it
网友回答
A. Take it easy
(答案→)B. That’s too bad
C. Nothing serious
D. Don’t mention it
解析：四个选项分别表示别着急、那糟了、没什么大问题和别客气，根据题意选B，在聚会上我忘了一个老校友的名字。——那太糟糕了。那肯定非常尴尬。