Question

Exercise 3 ,plz помогите

Answer 1

Запомните "формулу" для образования этого времени: To be (в нужной форме) + глагол с ING окончанием. 
I was working
He was shaving 
They were working
Were you doing
He wasn't looking at it 
They were sitting 

Answer 2

1 I was working...
2 he was shaving ...
3 they were working...
4 Were you doing..?
5 he wasn't looking at it ...
6 they were sitting ...