问题
It’s impolite to _____ your parents. You should talk to them politely.
A:is he； Yes, he is
B:isn't he； No, he isn't
C:has he； Yes, he has
D:has he； No, he hasn't;
B:isn't he； No, he isn't
C:has he； Yes, he has
D:has he； No, he hasn't;
正确答案是：
