they,what,doing,teacher,the,in,came,were,when
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 the teacher came in,the students were doing homework.的同
1.What ________ they _______ (do) when the teacher came in?
What were you doing when the teacher _______
what were you doing when the teacher _____the classroom
They were doing their homework when I came in.改( 为否定句) They
What were they doing when the UFO l_____?
they were doing their homework when I came in.对画线句子提问 ______
what were you doing when he came in?____ my mother with her
what were you doing when mom came in ? my sister asked me ,改