Answer:
The students passed the exam last week.
Explanation:
Because the second sentence says the students WERE passed the exam last week and <em>were</em> doesn't need to be in there. Therefore it is not correct.
I think you mean Interior. Interior means something that is within; inside.
A sentence example would be: He observed the mansion's interior with awe.
I hope this helped.
Thank you,
Otaku