— Oh, dear! I forgot my best friend’s birthday.
— ________ You'd better keep it in mind next year.
A：No problem.
B：You did?
C：It's OK.
D：Why not?
下列运算结果是负数的是（ ）
下列各项中，属于吸烟对人体产生危害的是（ ）
— Could you tell me______ in Yangzhou?— Of course. I think it's in Dongguan Street.
