Tu is used when you referring to someone you already know, someone in an informal or even fellow classmate, so it's false but you are supposed to greet someone by using "usted".
Answer:
Mi amiga es atlética.
Explanation:
In english, this means, "My friend is athletic."
I would say selva because selva is a jungle
Answer:
Viajar en tren es muy cómodo.
Viajar en carro es más cómodo que el tren.
Viajar en avión es más cómoda que viajar en carro o en tren.
1= si, la veo.
2= no, no la veo.
3= si, la veo.
4= si, la veo.
Using the model/example, if you see “si” then that means yes. Add the la and you’ll get “Si, la veo.” which means “Yes, I see it.” If you see “No, no” then you’d still add the la. “No, no la veo.” means “No, I don’t see it.”
SEPARATE WORD MEANINGS
Si= Yes
No= No
Veo= I see
La= The/it
Hopefully this helps :)