she was___(serve) in the kitcher when the light went out填什么为什么
问题描述：
she was___(serve) in the kitcher when the light went out填什么为什么
答
用serving
she was serving in the kitchen when the light went out。 过去进行时
答
用进行时态
serve===serving
因为在灯熄灭的瞬间,她正在做的事情,所以用进行时态.
she was serving in the kitcher when the light went out
灯熄写时,她正在厨房准备上菜.