What was she doing? What happened?
She was sleeping when she heard something. / She was sleeping when she saw someone.
What was he doing? What happened?
He was walking when a ghost appeared.
What was she doing? What happened?
She was walking through the school's hall when she fell into a trash can.
What was he doing? What happened?
He was walking when someone appeared behind him.
What was Bart doing? What happened?
Bart was walking when he saw his evil twin.
What was Homer doing? What happened?
Homer was running when he entered another dimension.
What was Homer doing? What happened?
Homer was drinking and watching TV when zombies came into the house.
What was Homer doing? What happened?
Homer was sleeping when his boss appeared.
