Answer:
The right conjugated verb used in the sentences is:
<em>1. </em><em>Mis hermanos </em><em><u>saben</u></em><em> conducir, pero yo no </em><em><u>sé</u></em><em>.</em>
<em>2.</em>
<em>- </em><em>¿</em><em><u>Saben</u></em><em> ustedes dónde está el estadio? </em>
<em>- </em><em>No, no lo </em><em><u>sabemos</u></em><em>.</em>
<em>3.</em>
<em>- </em><em>¿</em><em><u>Conoces</u></em><em> a Lady Gaga? </em>
<em>- </em><em>Bueno, </em><em><u>sé</u></em><em> quién es, pero no la </em><em><u>conozco</u></em><em>. </em>
<em>4. </em><em>Mi profesora </em><em><u>conoce</u></em><em> cuba y también </em><em><u>sabe</u></em><em> bailar salsa.</em>
Explanation:
The translation of the sentences is:
1. My brothers <u>know</u> how to drive, but I don't <u>know</u>.
2.
- Do you <u>know</u> where the stadium is?
- No, we don't <u>know</u>.
3.
- Do you <u>know</u> Lady Gaga?
- Well, I <u>know</u> who she is, but I don't <u>know</u> her.
4. My teacher <u>knows</u> Cuba and also <u>knows</u> how to dance salsa.
The difference between the verbs <em>"saber"</em> and <em>"conocer"</em> is the next:
- <em>Saber: </em>It is a knowledge that will have future use and that could have been learned through books or experience.
- <em>Conocer:</em> Knowledge applied to places or people that require direct contact with that place or person, that is, having been there or having treated that person.
Taking that into account, below you can see the conjugation of both verbs in Simple Present:
- <em>Yo </em><u><em>sé/conozco</em></u><em>.
</em>
- <em>Tú </em><em>sabes/</em><u><em>conoces</em></u><em>.
</em>
- <em>Él </em><em>sabe/conoce.
</em>
- <em>Ella </em><u><em>sabe/conoce</em></u><em>.
</em>
- <em>Ello </em><em>sabe/conoce.
</em>
- <em>Nosotros </em><u><em>sabemos</em></u><em>/conocemos.
</em>
- <em>Ustedes </em><u><em>saben</em></u><em>/conocen.</em>
- <em>Ellos </em><u><em>saben</em></u><em>/conocen.
</em>
Once you know the use of verbs and their correct conjugation, you just have to replace the noun with the appropriate personal pronoun and use the conjugation applied to that pronoun.