Помогите! Нужно поставить в правильной форме!
. Past Simple Past Continuous 1)David __________________(come) in when the children _____________________(write) a dictation. 2)The cat ________________(sleep) on the chair while the dog _____________(sit) near the table. 3)She _______________(buy) a present for her Granny when I _________________(see) her. 4)Kate ______________(clean)her room, _______________(wash the dishes) and _____________(make) her bad. 5)When the teacher___________________(come) into the classroom the children _________________ (sit)at their desks.

1.came/were writing 2.was slipping/was sitting 3.was buying/saw4.cleaned/washed the dishes/made5.came/were sitting