问题
选择题
When _____ why he walked in _____ permission, he just _____ at us and said nothing.
A．asked；without；stared
B．been asked；with；looked
C．asking；without；glared
D．to be asking；with；laughed
答案
答案：A
这里When引导的时间状语从句的主语和主句的主语相同,故在asked之前省略了he was.