number of volunteers took part in the event,and the number of them increasing now.
The city walls _______ forty years ago. What a pity!
My classmate, Ann, ________ five Oxford Bookworm novels already.
Mr Brown, I have ________ special to show you. Guess what it is.
We ________ a sports meeting if it is fine next Wednesday.
I think Book 6 is ________ than Book 5.