To put questions to the sentences(поставить вопросы) betty was reading a book the whole evening(what book) i was waitaing for you aften (where) jane and helen were talking loudly when i came in(what about) we were watching tv at 7 oc'lock(what programme) when the teacher came in the pupils were discussing a very interesting topic(what topic) when i saw betty and jeft several hours ago they were layghting gaily(why) granny was singing a song when i came in(what song) when i returned home mother was still reading by the fire (what)

1)What book Betty was reading the wole evening?
2)Where was I waiting for you after?
3)About what Jane and Helen were talking loudly when i came in?
4)What programme were we watching tv at 7 oc'lock?
5)What topic the children were discussing when the teacher came?
6)Why Betty and Jeft  were laughting gaily when i saw them?
7)What song granny was singing when i came in?
8)What mother still reading,when I returned home?
Наверное так, но лучше проверить)