what were you doing 是什么时态

　　What were you doing in the middle of the road?

　　你跑到路中间来干什么啊？

　　What were you doing here late one night?

　　那天晚上很晚了，你在这儿干什么呢？

　　What were you doing at this time yesterday?

　　昨天此时你们在干什么？

　　What were you doing up there? All that noise.

　　你刚才在上面干嘛？那么吵。

　　What were you doing at the public house?

　　当时你去公寓做什么？

　　What were you doing when they came to see you yesterday.

　　他们昨天来看你时，你在干什么？