Spanish home work please help fast

Es importante que nosotros en el medio ambiente. a. piense b. piensen c. pensemos d. pienses

Escoge la conjugación en el imperativo del verbo entre paréntesis. usted (levantarse).

"in english, write six to eight sentences comparing cultural aspects of greetings in spanish-speaking countries with greetings in your own culture. use what you learned in the lessons to tell about three differences and three similarities. discuss non-verbal greetings and how respect is shown. you may also include verbal greetings, but do not simply translate phrases from one language to another."