How do you determined if "a" or "al" will be used in the sentence?

Complete the sentence with the correct form of the verb caerse in the preterite tense. yo caminando en el parque. use the following jumbled words to write a sentence, using the preterite form of verbs with the same conjugation as caerse. el gato / oir / ellos use the following jumbled words to write a sentence, using the preterite form of verbs with the same conjugation as caerse. oir / maria / no / el anuncio

Spanish asap. choose the masculine equivalent of the underlined word. mi _madre__ esta feliz a. padre b. hijo c. primo d. tio

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