Answer:
Cierto
Explanation:
The word quantos can be applicated to any <em>plural</em> noun it describes
Ex: Cuantos lapises tienes? is correct, while
Cuantos lapis tienes? would be incorrect
MeeeeeExplanation:
a0) quizo
a1) pudieron
a2) sirven
a3) probó
Answer: i may be wrong in some of them because i do them based on what i know
6)saben
7)sabes
8)conozco
9)conoce
10)sabes