When is ‘a’ used after ASISTIR in a sentence?

(I have no idea if this will be answered...)

__ hermanas van al gimnasio todos los días. mis nuestra mi su

Refhow were japan's actions before and during world war ii similar togermany's actions over the same period?

59: 33 according to the article, which of the following is not one of the reasons flamenco is special? a. it is not popular in the west, but it is a western form of music. c. the dance also serves as an instrument. b. the music, song, and dance can all be improvised. d. it is folk music of high quality and complexity.