Безотлагательно!!! Кто что знает пж

4 задание
1) had just finished, heard
2) arrived, had forgotten
3) had never seen, came
4) reached, had already left
5) had left, arrived

5 задание
1) had been practicing
2) had been studied
3) had gone
4) had finished
5) had died
6) had been writing

6 задание
1) was
2)were sitting
3) feeling
4) was feeling
5) had been waiting
6) had only just joint
7) had never played
8) was
9) knew
10) was running