-Is that your best friend Kitty?- No, it _________ be her. She flew to Singapore yesterday.
--- Are you free today, Mrs Green? --- I’m free every day ______ today.
They want to make more cars with ____ workers and ____ money.I think it’s impossible.
No one knows ________ in the future.
Kids won’t go to school.They will study ___ home ____ computers.
He thought that computers would never be _____ most people.