问题
Do you mind opening the windowthe air inside is not so fresh.— __________, Mr. Smith is taking a nap (小睡)，don’t make him catch a cold.
A:I’m sorry
B:Certainly not
C:I don’t know yet
D:Well, I should be;
B:Certainly not
C:I don’t know yet
D:Well, I should be;
正确答案是：
