问题
—Your suitcase seems very heavy. Need any help—-__________.
A:That all depends!
B:No, thanks. I can manage it myself.
C:It’s a pleasure.
D:It couldn’t be better. Thank you all the same.;
B:No, thanks. I can manage it myself.
C:It’s a pleasure.
D:It couldn’t be better. Thank you all the same.;
正确答案是：
