1 had
2 spent
3 lost
4 didn't pass
5 happened
1 have changed-didn't like
2 have found-did you find
3 has already lost
4 lost
5 has he spoken
6 has been snowing
7 have finished it
8 studied
9 have passed
10 have you known
11 have you ever written
12 waited
13 has just gone
14 haven`t tried
15 has been eating
1have been
2 ago
3 came
4 has been doing
5 have opened
6 have asked
7 hasn`t decided
8 has never lived
9 bought
10 have been talking