单选题
If you are in another person's home and want to smoke, what should you do?
A、
You had better give the host (男主人) a cigarette.
B、
You should ask the host or hostess if they mind your smoking.
C、
You shouldn't light up until you get their promise.
D、
Both B and C
【正确答案】
D
【答案解析】
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