La sal de la mesa.
a. caíste
b. caí
c. cayeron
d. cayó

Cayó is the conjugation of the verb caer that matches the third person singular in the preterite tense. This is an irregular verb, hence you must learn by heart its conjugations. Recall that the preterite tense is one of two simple past tenses. It is used to describe actions that took place or were completed at a certain point in the past. Finally:

La sal cayó de la mesa (The salt fell off the table)

translated the questions are:

do you need that cup?

need to use these napkins?

do you prefer this apple pie or that flan?

would you like more?

do you prefer this chocolate ice cream or that vanilla ice cream?

1. no necesito eso taza

2. sí tengo esas servilletas

3. prefiero esta tarta de manzana

4.   i'm not sure

5.prefiero este helado de chocolate

also if you need later on i used to use this website:       plz let me know if im wrong: )