Question

Juan y Alberto _______________ en mi casa frecuentemente.

A.
estudia
B.
estudiaban
C.
estudiabas
D.
estudió

Answer 1

B.

Step-by-step explanation:

Juan y Alberto estudiaban en mi casa frecuentemente.

Since the form is for "ellos" then the verb conjugate is estudiaban.

"Estudiaban" also implies that the action was a past habitual action (Imperfect tense).

Answer 2

B! the others just don’t make sense. im fluent in spanish!