Question

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Answer 1

Es importante que todos estudien cada noche. (estudiar)

Answer 2

Es importante que todos estudien cada noche. (estudiar). It is a suggestion.
present subjunctive estudiar.
yo estudie
tú estudies
él/ella estudie
nosotros estudiemos
ellos estudien

Answer 3

Thank YOU for the explanation it helped me understand!!

Answer 4

If you need more explanations write me please.

Answer 5

Will do thank you for the offer!! You are amazing!!

Answer 6

This link is very useful to understand better the subjunctive mood.
http://www.studyspanish.com/lessons/subj1.htm

Answer 7

Thank You i am sure it will come in handy!!! :)