Past continuous: The skeleton _____ ________ (dance) to the music.
The skeleton was dancing to the music.
Past continous: They ____ ______ (walk) when the bats _____ (fly) out of the house.
They were walking when the bats flew out of the house.
Present Simple: The penguin ___ (pop) out of the pumpkin.
The penguin popped out of the pumpkin.