Help pls, gusta or gustan has to be one of those

What is one difference between schools in spain and costa rica? a. the lunchtime for students b. the two class shifts available c. the time when school starts d. the school food menu choices

Fill in the blank with the correct form of preterite or imperfect of the verb in parentheses. nosotros a la playa con ana ayer. (ir) answer for blank 1:

Which idiom best completes the sentence? en que el retiro es un parque emblemático de madrid. a. estoy harto b. estoy de acuerdo c. estoy en camino d. estoy en las nubes