sorry. B、,I'm sorry to have kept you waiting. C、,I'm sorry to be kept waiting. D、,Sorry to wait so long.">17."很抱歉让您久等了."用英语最妥当的表述是( ).
选项: A、,I'm sorry. B、,I'm sorry to have kept you waiting. C、,I'm sorry to be kept waiting. D、,Sorry to wait so long.