Answer:
When a horse makes a sound, it neighs. So the sound horses make is called a “neigh”.
Ud=Usted ( Singular)
1: Canta
2: Escribe
3: Mira
4: Come
5: Respira
6: Nada
Uds= Ustedes (plural)
7: Viajan
8: Empiezan
9: Escriben
10: Relatan
11: Usan
12: Beben
13: Hablan
14: Suben
15: Ven
Hope this helps, good luck!