--- If you have any trouble, be sure to call me.
---- _______.
A. I am sorry to hear that B. I will. Thank you very much
C. I have no trouble D. I will think it over
--- If you have any trouble, be sure to call me.
---- _______.
A. I am sorry to hear that B. I will. Thank you very much
C. I have no trouble D. I will think it over
B