We _________ ( make ) a pumpkin lantern when our friends ________ ( come ).
We WERE MAKING a pumpkin lantern when our friends CAME.
He ________ ( go trick-or-treating ) when he _______ ( see ) a witch.
He WAS GOING TRICK-OR-TREATING when he SAW a witch.
My friends ________ ( walk ) on the street when they _________ ( hear ) bats.
My friends WERE WALKING on the street when they HEARD bats.
I ________ ( relax ) on the sofe when the doorbell ________ ( ring ).
I WAS RELAXING on the sofa when the doorbell RANG.