Помогите! С 8 по 16! ПРОШУ ПОМОГИТЕ!Необходимо: " Раскройте скобки, опотребив

8. Looked,saw,was snowing, was. 9. is talking,is talking,is watching 10. didn't go,was,stood

11. were working, was working

12. are sitting,are waiting,is

13. asked,didn't ask,was

14. Was, was beating, was

15. was opening,understood,did 16.returns, has,rests,didn't rest,was working