I was reading ____ (A when,B as)the light went off.
问题描述:
I was reading ____ (A when,B as)the light went off.
答
A when
when是强调"当我在读书的时候灯灭了"
B as是强调一种同时发生的状况,比如I was walking as listening to the music at the same time.意思就是说我一边走路一边听音乐.