问题
选择题
_________ her son outside the school gate, she drove straight to her work place.
A．To drop
B．Dropped
C．Having dropped
D．Having been dropped
答案
答案：C
题目分析：句意：将儿子在校门外放下后，她径直开车上班。因为她先将儿子在校门外放下，然后径直开车上班。所以是有动作的先后关系，用现在分词的完成式做状语，所以选C。