I had to pick from 3 greek options of which two were exactly the same except for one using "είσαι" and the other "είσαστε". I admit it is unlikely to have multiple people under the desk, but why is the second option wrong?
What if είναι is used? How are we to know who the subject is?
I wonder why I was marked wrong for: γιατί είσαι εσύ κάτω άπο το γραφείο
I saw this option two times... the response options should be reviewed to remove duplicates.