1 I've written to them three time but they haven't replied yet.
2 I've asked you again and again but you haven't done it yet.
3 I lent him $10 last month but he hasn't given it back yet.
4 He lost his pen a week ago but he hasn't found it yet
5 He borrowed my book last year but he hasn't given it back yet.
6 She went to New York six months ago but she hasn't returned yet.
7She gave me $2 a week ago but I haven't returned it yet.
8 I finished reading my library books a long time agonut I haven't changed them.
9 She went to the bus-stop haft an hour ago but The bus hasn't come.