1 has heard
2 has remained
3 was walking
4 were playing
5 had just come
6 smiled
7 waved
8 started
9 took/had taken
10 shattered
11 dropped
12 sprinted
13 had
14 was
15 had vanished
16 fell
17 began
18 lifted
19 started
20 was trying
21 arrived
22 were formed
23 showed
24 had vanished
25 could
