--- What a lot of fun it is to play on a frozen sports field! --- Isn’t it rather risky, ?
_________, I’d like to say thanks to all of your present.
---Someone’s been here. Who ___ it be? It looks like Helen.---It ___ be Helen.She is ill in hospital.
Do you know what ___ while you were away from home?
He was __ twenty when he was gone.
The girl ___ in front of me kept laughing and crying.