问题
选择题
—What do you think made Tina so delighted？
—__________ the driving test at her first try.
A．As she passed
B．Passed
C．Because of passing
D．Passing
答案
答案：D
此题中do you think是插入语，what 在特殊疑问句中做主语，所以相应回答部分也要做主语，D项的动名词短语可以做主语 A. As she passed 引导状语从句，做状语C. Because of passing也是原因状语 B. Passed 过去分词短语也不能做主语