Punctuality is admired but its not strictly observed i hope it helps
If i understand the task correctly, ellos would be the right answer
Answer:
los ríos que pasan por Puerto Maldonado es El Tambopata y Madre de Dios.
You can ask if you go somewhere a specific day for example voy allí el lunes which us do I go there Monday.
Answer:
I'm guessing its "necesito"
That means "have to"
so it would be :
Spanish: yo necesito regresar a la casa a las 4:00 de la tarde
English: I have to get home at 4:00