What ... you ... when the teacher arrived?
I was talking to my friends.
What ... you ... when you ... the deer?
I was putting out the campfire.
What ... he ... when he ... the deer?
He was telling stories.
What was he doing in the morning?
He was picking wild strawberries.
What ... you ... when she arrived at the campsite? (#3)
I was roasting fish.
What was she doing in the afternoon?
She was identifying trees.
What was she doing in the afternoon?
She was colleecting leaves.
What ... she ... when you arrived at the campsite? (#2)
She was building a campfire when I arrived at the campsite.
Talk about the picture. (#1)
She was setting up a tent when I arrived at the campsite.
What ... you ... when your mom arrived home?
I was playing games.
Talk about the picture. (#4)
She was looking at the stars when she saw the deer.