#III
1.hasn't changed
2.hasn't decided
3.haven't driven
4.hasn't left
5.hasn't complained
6.haven't arrested
7.haven't eaten
8.hasn't spoken
#IV.
1.Mum hasn't done the washing yet. - 6.
2.Max has bought new video games.- 1
3.They have found a table for two. - 3
4.Dad has never done any DIA jobs. - 8
5.Mum hasn't done the shopping yet. - 5
6.Alex has prepared a good chocolate cake. - 9
7.Grandad has finished the lawn mowing. - 4
8.They have already swam with dolphins. - 7
9.She has gone to walk her dog out. - 2
#V
1.Yes, I have
2.No, she hasn't
3.Yes,he has
4.Yes,they have
5.No, he hasn't
6.No, he hasn't
7.Yes, they have
8.No, he hasn't