my mother had got the dinner ready by the time the guests arrivedwhat ( ) your mother ( ) by the time the guests arrivedgot the dinner ready划线部位提问

问题描述:

my mother had got the dinner ready by the time the guests arrived
what ( ) your mother ( ) by the time the guests arrived
got the dinner ready划线部位提问

was doing
表示过去进行时
意思是 你的妈妈在客人到来那个时候正在做什么