Here are the best answers for each of the questions:
Question 1
Es importante que _______
Response: bebas mucha agua.
Question 2
The waters around Costa Rica account for around _______ of all the marine species in the world.
Response: 5.5%
Question 3
Visitors to Tortuguero National Park must go with a guide at night in order to see _______
Response: turtle nesting.
Question 4
Which is the best translation of the sentence?
Response: It's not a good day for the museum.
Question 5
Es bueno que los turistas _______ corteses.
Response: sean