Why did X get angry with Y?
Because ...
Why did X make a funny face?
Because ...
Why did X roll her eyes at Y?
Because ...
Why was X angry?
Because ...
Why did X say thank you to Y?
Because ...
Why were X and Y happy?
Because ...
What was X laughing at?
Because ...
Why did X miss the train?
Because ...
Why were you and X celebrating?
Because ...
Why was the teacher angry with X?
Because ...
Why was X crying?
Because ...
Why was X sleepy this morning?
Because ...
Why did X wave?
Because ...
Why did X laugh?
Because ...
Why did X blow kisses to Y?
Because ...
Why was X playing the trumpet at the office this morning?
Because ...
Why did X put his head in his hands?
Because ...
Why did X stop smiling?
Because ...