I would look through his school book in the relevant section as the A and P might become clear through examples given. If it is not active or passive, I really haven't got a clue.

I always told kids to not leave it to the last minute to prepare a test, so that if anything is unclear they leave themselves time to check with me before the week-end. But kids are kids (mine drove me nuts too..). Viel Glueck dabei.