Прошу помогите с Домашним Заданием.
Употребите а) Past Simple или б) Present Perfect
1) ... you ever (to visit) ... Hungary?
2) Our group ... (to tour) Yugoslavia this month.
3) The film ... (to produce) a good impression on me.
4) A fortnight ago the theatre ... (to produce) a new play.
5) When ... you (to finish) ... school?
6) I ... (to happen) to see John the other day.
7) I ... (to start) writing my book two years ago.
8) I ... (to write) half of it since.
9) We ... (to witness) great progress in space research this century.