Ответы и объяснения

1) went 
2 was 
3 was going 
4 wad doing 
5 was doing 
6 did 
7 was doing 
8 was doing 
9 didn't, wrote 
10 wasn't playing, was reading 
11 wasn't sleeping, was doing 
12was going, were talking and laughing, was laughing, was still laughing, told, liked 
13 went, found, had injured, decided, brought it, was feeding it and taking care of it, it has left