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