What were Mr Douglas's dreams about? Write sentences using Past Progressive and Past Simple. (0) chooses a Christmas tree / a flamingo flies near

(0) While he was choosing a Christmas tree, a flamingo flew near.
(1)  While  he  was  reading  e-mails,  he  saw a ghost  behind  the computer.
(2) While he was swimming in the pool, a crocodile caught him.
(3)While he was walking across the street, he met a panda.
(4) While he was sweeping the floor, Santa came in
(5) While he was watering the flowers, one flower changed its colour