Los verbos cantar, bailar, caminar, amar son -ar verbs -er verbs -ir verbs large amount of points for quick answer

Right ar verbs

The infinitive is one of the non-personal forms of the verb.

In Spanish grammar the infinitive has two forms:

1) Simple Infinitive: has three possible endings: -ar, -er, -ir

2) Compound Infinitive: it is formed with the verb "haber" (to have) + the participle of the verb we want to conjugate

In this case we are talking about the first form (Simple Infinitive), especifically the ar verbs, because cantar (to sing), bailar (to dance), caminar (to walk), amar (to love) end in ar.

1- por
2-por
3-para
4-para
5-por
6-para
7-para
8-para
9-por
10-para and por

I'm not sure if you mean for us to translate or to answer. but i'll translate as these are questions for you to answer. 1. how long has it been since you've read a book? . 2. how long has it been since you've eaten breakfast? . 3. how long has it been since you've talked with your spanish professor?