Here are the correct answers to your questions:
Question 1:
Yo _______ la mesa antes de la fiesta.
Response: pondré
Question 2:
The Philippines is _______
Response: an archipelago.
Question 3:
Recently in the Philippines, there has been an increased interest in learning ________
Response: Filipino.
Question 4:
El vuelo _______ a las cuatro de la tarde.
Response: saldrá
Question 5:
Dudo que Tomás ______ en casa ahora.
Response: esté
Let me know if you need any more help!