Put in am/ is / are.
‐ Bill, Mary and Vicky (1) are my friends.
‐ (2) Are they in the same class?
‐ No, they (3) are not.
‐ What classes (4) are they in?
‐ Bill (5) is in class 4”a”. Mary and Vicky (6) is in class 6”d”.
‐ And what class (7) are you in?
‐ I (8) am in class 5”b”.