Is this ______ orange?
China is developing _________ of all the countries in the world.
A moment, please.I'm checking if Mr. Smith _________ free tomorrow.
—Is Jessica giving us a speech this evening?—No, it _________ be her.She _________ to Japan.
—Sorry, sir. I made a mistake again.—_________ Practice more and you will do better.
—Tom, I'm watching a football match.What about you?—_________