8 looked,saw,was snowing,was covered

9 Is somebody talking in the next room?

No, nobody is talking.my son is watching......

10 why didn't he go to school yesterday?was ill, was staying

11 were you working, when I phoned you last night?yes,I was working

12 why are they sitting here now?are waiting.The doctor is late

13 did he ask you to work late last Tuesday? No,he didn't ask.decided

14 was;was beating down;was

15 opened; understood;had done

16 returns,has,rests.

Didn't rest, was working