Потому что dogs это мн.ч.,а окончание -s добавляется при ед.ч. 3 л.
The Sun doesn't set in the East
Hens don't eat foxes
Blacksmiths don't make things from wood
The river Dvina doesn't flow into the Black sea
1 Linda TOOK (исправленное слово) a photo... (дальше все правильно)
2 They LIVED in ....
3 He HAD a test
4 Mira WATCHED...
5 Samina's parents were angry because she CAME home late.
6 Tahmina BOUGHT ...
7 Damira's grandmother told her fairy tales when she WAS a little girl