【题目】_____ 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
在线课程【答案】B
【解析】
试题分析：考查非谓语动词的不定式。此句考查非谓语动词不定式的用法，在这里作目的状语，可置于句首。句意：为了完成他的调查报告，Reagan教授在近半年时间了经历了各种各样的困难和温暖，故选B。