14.This is the reason ______he explained at the meeting for his carelessness in his work.( )
0 140756 140764 140770 140774 140780 140782 140786 140792 140794 140800 140806 140810 140812 140816 140822 140824 140830 140834 140836 140840 140842 140846 140848 140850 140851 140852 140854 140855 140856 140858 140860 140864 140866 140870 140872 140876 140882 140884 140890 140894 140896 140900 140906 140912 140914 140920 140924 140926 140932 140936 140942 140950 151629
A. | that | B. | what | C. | how | D. | why |