GIVE THE CORRECT FORMS OF THE WORDS IN THE BRACKETS

GIVE THE CORRECT FORMS OF THE WORDS IN THE BRACKETS
1. He plays the piano for a bit of...........(relax). it's one of his favourite.......(relax).
2. The fire looked like an accident, but the police are still considering the.........(possible) of arson.
3. It's........(possible) that he fotgot our meeting: he must have stayed away on purpose.
4. Did he give you......(permit) to take that?.
5. The telephone is a wonderful......(invent).