问题
选择题
She_____writing the report after breakfast and handed it in at noon.
A．set off
B．set down
C．set out
D．set about
答案
答案：D
题目分析：此处set off 引爆；set down写下，记下； set out开始着手做某事；后接不定式；set about开始做某事，后接动名词。故选D。句意：他早饭后开始写报告，中午就交上了。