1. I haven't bought any presents for my family yet.
2.They haven't finished their breakfast.
3.We haven't worked in the field yet.
4.He hasn't done everything he was tasked with.
5.My brother and I haven't gone to the cinema this month.
6. I haven't decided who I’m going to invite.
7. Mum’s not very happy. We haven't done our homework.
8.Where’s Pete? He hasn't called since yesterday.
9.My sister and I haven't talked to each other since last year.
10.John hasn't used his old computer since his days at the university.