Answer:
1. sabes
2. sé
3. conocen
4. sabemos
5. sabe
Explanation:
The exercise aims for you ro practice the usage and conjugation of the verb saber and conocer (to know).
Basically in Spanish there is a main difference between these verbs:
Saber: This is related to the knowledge of a fact or certain information.
Conocer: This is related to be familiarized to a person or place.
Here is the conjugation of both verbs in the indicative form of present:
SABER
PRESENTE
Yo sé
Tú sabes
Él/Ella/Ud. sabe
Nosotros sabemos
Vosotros sabéis
Ellos/Ellas/Uds. saben
CONOCER
PRESENTE
Yo conozco
Tú conoces
Él/Ella/Ud. conoce
Nosotros conocemos
Vosotros conocéis
Ellos/Ellas/Uds. conocen
D: ¿Te gusta vender los collares?
Gustar conjugated is still one word so it cannot be "gust a"
A verb ("vender") is singular so you cannot use "gustan"
A verb after gustar has to be infinitive
so the correct answer is ¿Te gusta vender los collares?
HABIA
TENIA
CAMINABA
LLEVABA
ELABORADA
C. Abierto.
The past participle is the tense with -ed, but abrir is one of the irregulars.