It fitted, and he opened the box, but after a moment's hesitation, closed and relocked it, and slipped the bunch of keys, as well as the key that had originally stood in the lock, into his own pocket. 
The key worked for the box, but he relocked it and put the keys away.
He couldn't find a key to work in the box.
The redheaded boy is playing an instrument.
Children on the steps at a water park.
Two boys ride a bike.
A man in the desert.
I do all the things I like to do.
A man pushes his son in a shopping cart.