I need help with these 3 questions, pls

#2: Ellos "llegaron" tarde hoy.

#3: Ella esta navegando por el oceano.

#4: Yo estoy devolviendo mis libros a la biblioteca.

1 - audio phone numbers you want to invite some classmates to a party, but you do not have their telephone numbers. listen to each person's telephone number and write what you hear. follow the model september 22 11: 59 pm unlimited attempts remaining grade settings 63-65 grammar presentation tutorial model you see: elián you hear: it's eight, forty-three, zero, eight, thirty-five. you write: 843-0835 arturo: alicia: roberto: graciela: simon: eve: josé antonio: