_____hisresearchpaper,ProfessorReaganexperiencedvarious...

問題詳情：

_____ his research paper, Professor Reagan experienced various hardships and loneliness for nearly half a year．

       A．Accomplishing                                  B．To accomplish

       C．Accomplished                                  D．Having accomplished

【回答】

B

知識點：非謂語動詞

題型：選擇題