We were having______ lunch when they came in 填什么?为什么?

We were having______ lunch when they came in 填什么?为什么? they,what,doing,teacher,the,in,came,were,when they were talking loudly when the teacher came in They were talking _______ when the teacher came in When we were having our supper,Tom came in one day,we were having lunch when a foreign boy came( )our c the two students -----------when the teacher came in 为什么填 we They were doing their homework when I came in.改( 为否定句) They We were having lunch,when someone knocked the door (问号处填介词或副 yingyudanxuan When I came in,they games in the room..A.were they were doing their homework when I came in.对画线句子提问 ______ They were making a cake when I came in 转换成A cake ____