Si no estuviéramos en clase, ..... estudiando.
-
estamos
-
estemos
-
habríamos estado
-
estaríamos
D
Correct answer
Explanation
This is a contrary-to-fact conditional statement. 'Si no estuviéramos en clase' (if we weren't in class - contrary to fact) requires the conditional tense 'estaríamos' (we would be). The subjunctive 'estemos' and indicative 'estamos' don't fit the conditional structure.