I.
1 Have you ever seen that film?
2 We have had two grammar tests so far.
3 Nick has met Steve three times this week.
4 Sally and Ewa have already returned.
5 How long have you known him?
6 He has never played the violin.
7 Sandy has not answered my letter yet.
8 My friend has just finished his work.
9 It has been the first time they have slept in a tent.
10 I have not contacted him since last Friday.