---Listen, Mum. I heard the footsteps. Is it Dad? ---It ___ be him. He’s gone to Beijing on business this morning.
________ the girls in our class ________ over twenty.
We planted _______ trees last year.
The ________ of the island was quite an event in the world.
My smother ________ the e-mail invitation, but she realized she had forgotten to invite John.
He is a very unfriendly man, so few people ________ at his party last Sunday.