Odpowiedź:
ex3
1 have been shopping
2 has scored
3 have forgotten
4 has been practising
5 haven't heard
6 has lost
7 have been going
8 has read
ex4
1 you have been crying
2 We are getting married
3 He has been
4 we have had
5 everybody seems
6 I argued
7 I have known
8 I have been thinking