Question: 2. Julio Avila López-Pedraza Linit 4 vocabulary. Just cl fun and leaching's sake! Day 9 Waiting exercise. Page 23 Using verbal structures deber + infinitive (must do), texxer que + infitinive (to have to do), es necesario que nosotros + subjunctive (it is necessary that we) and es importante que nosotros + subjunctive (it is important that we), write three sentences with each using the above vocabulary about the environment. Use "porque" for all your sentences and make sure they are all different and relevant in content. For example: Nosotros debemos respetar lo naturaleza porque no podemos vivir con contaminación. Es importante que nosotros cuidemos los bosques porque necesitamos espacios verdes. Deber+ Infinitive: 1. 3. Tener que + infinitive: