Розкрийте дужки, використовуючи Present Perfect :
We(to have) two grammar tests.
Nick(to meet) Steve three times this week.
How longyou(to know) him?
Henever(to play) the violin.
Sandy(not to answer) my letter yet.
I(not to see) him since last Friday.
1 have had
2 has met
3 . How long have you known him?
4 has never played
5 hasn't answered
6 haven't seen