1) I just have got a letter from him
2) Her parents have bought a new car
3) Have you been in the library? Not yet
4)Not . Have you already read the book?
5) She hasn't given me the keys
6)Never has swum in the ocean
7) Since my childhood I have lived in New York
8) She hasn't been in the theatre
9) My friend hasn't broken the clock
10) Have they already forgotten about it?