Incorrect
It’s supposed to say no digas mentiras
Answer:
La silla son roja.
Explanation:
"La silla" is just one object, so you can't use the multiple version of "ser" for it, you'd use "es".
Answer:
1. Yo seco.
2. Yo alcanzo.
3. Yo coloco.
4. Yo pego.
5. Yo averiguo.
6. Yo frío.
7. Yo veo
8. Yo gruño.
9. Yo mastico.
10. Yo cruzo.
Explanation
Identifying the narrator and the time that a sentence indicates is the first step that must be taken. this is very important to be able to logically conjugate the verbs, and that these have concordance with what is being expressed
Como estas is for friends and/or family. Como eres is more formal for work and so on.