I agree with the person above.
It should be - Tu hiciste mucho ayer.
This is the conjugation of the verb <em>hacer </em>in the preterite form:
hice, hiciste, hizo, hicimos, hicisteis, hicieron
(Ellos) Acabaron de escribir la carta.
You can omit "ellos" if needed
What are the vocabulary words you have to use?
1:none of them
2: A
3: B
4: idk
5: C
I believe Costa Rica has no deserts. Almost all of the interior of Costa Rica is mountains that are blanketed in jungle/forest. Also it has around 7 active volcanoes depending on how you'd define an active volcano, one of the more popular ones is the Poas Volcano which i believe is a national park. As for beaches, Costa Rica is surrounded completely on 2 sides by the Pacific on the West and the Gulf of Mexico on the East.
