1.I have just cleaned my hands.
2.Children haven 't finished breakfast yet.
3.I have never heard this song.
4.I haven t sent this letter yet.
5.The teacher has just opened the window in the classroom.
6.I have never been here before.
7.The last we have visited our grandma.
8.Mother has washed my trousers and she has ironed them.
9.How long have you known Mr Black ?
10.Mr Grey has been our boss for 5 years.
11.Paul hasn ;t been at shool since Tuesday.
12.I haven t had no free time last.
13.I have know her since she arrived here.