Explanation: you have to take the verb and add: -é , ás, -á, -emos, -éis, -an. The choice depends on the person you refers to.
1- conservaré
2-contaminaran
3- cuidará
4- hará (irregular)
5- protegerás
6-pondremos (irregular)
What exactly do need to be translated
It can be either "quería" or "quiero"
It depends on what do you want to say.
If you want to say "I wanted to go to the dance" use "quería"
If tou want to say "I want to go to the dance" use "quiero"
Good luck.