Escribir los siguientes números en notacion cientifica

54,000,000,000

Using both preterite and imperfect tenses, describe a happy memory from your life. where were you? when did this event occur? who was there? what happened? how did you feel? your response should consist of at least 5 sentences in spanish.you will be graded on (a) pronunciation, (b) correct verb usage, and (c) overall quality of your response.

Some of your family members went to the shopping mall yesterday. look at the illustrations and complete each sentence with the correct form of the given verb. yo unos regalos para mi hermana menor. (comprar)

Este tren no va directo. tengo que a. revisor b. transbordar c. subir al tren ocupar d.