The sentence translates to “The men sell cars.” So I would personally say yes because I do not see anything wrong with it. So yes it is correct.
Mexican are the most popular among the people in California
It would be;
Antes mi hermanita le TENIA miedo a los perros.
TENIA is the past form.
Hope this helps (not sure if this is what you needed)
Answer:
No, no me gusta <u>ni</u> cantar ni tocar la guitarra.