They were singing while we were dancing.和He came while I was

They were singing while we were dancing.和He came while I was They were singing while we were dancing. They were singing while we were dancing They were singing while we were dancing.怎么读, We （were clapping )our hands while they were singing on the The boys were singing while the girls were dancing last nigh They were singing whenwe were dancing ( )we were having breakfast,he came in.A.while B.when C.afte While we were talking,the teacher came in Kangkang was taking some photoes while we were playing toget Kangkang was taking some photos while we were playing togeth what were you doing while i was away last week