---who______it be that is knocking at the door? ---It_______be Father, but I’m not sure.
If you want a friend, you’ll find _____ in me.
His income is double _____ it was five years ago.
_____ of you comes first will get the ticket.
_____ worries me is _____ we’re going to pay for all this.
I’m afraid we can’t have coffee; there’s _____ left.