Fill in the gaps with the correct verb form.
While we (sing) "Auld Lang Syne" somebody(light) a firework.
While Mum (make) the Christmas pudding, she(put) a coin into it.
The dog (take) a hamburger while Dad (make) a barbecue.
Celia and Paul (go) trick or treating when I (see) them.
When I (meet) Celia and Paul in the street, they (wear) costumes of ghosts.
Celia and Paul 9exchange) Easter eggs when I (bring) chocolate bunnies for them.
When the children (hang) greetings cards, Dad (bring) in the Christmas tree.