【题目】--- When I needed his help, my roommate just stood by and did nothing.
---_______He appears to be a warm-hearted person.
A.You don't say!
B.You set me up.
C.I'll say.
D.Don't fall for it.

【答案】A
【解析】考查情景交际。上句：当我需要他的帮助时，我的室友只是袖手旁观，什么也没做。下句：你不要说了。他显现出是一个热心肠的人。故选A。