Answer:
1. Sergio García sabe jugar al golf.
2. Juanes y Carlos Vives conocen a Shakira.
3. Los colombianos saben bailar el vallenato.
4. Yo no conozco al presidente de Colombia.
Step-by-step 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.