Answer:
1. Environmentalists shall not support the (major) mayor unless the mayor (change) his environmental policy.
2. The mayor will speak with his advisor before (arrive) the environmentalists.
3. Environmentalists entered the mayor's office as soon as (know) that they were waiting for them.
4. The mayor assures them that he always thinks about the environment when (giving) permits to build new buildings.
5. Environmentalists will be concerned until the mayor (answers) all your questions.
Explanation:
I translated them to make them easier for you :).
Hopes this helps you in Spanish.
