—I really don’t know how to thank you enough .
— .
A．No problem B．Think nothing of it
C．Not at all D．It doesn’t matter
—I really don’t know how to thank you enough .
— .
A．No problem B．Think nothing of it
C．Not at all D．It doesn’t matter
B
think nothing of it：used as a polite response to apologies, thanks, etc,用作回应道歉.感谢等的客气话。故选B。