-Where’s the old blue bag?- I’m not sure, but it ______ be thrown away. It be somewhere in the house .I saw it yesterday.
Mother often tells Tom ______ too much time playing video games.
Today Chinese ______ by more and more people all over the world.
You have been to Beijing. How long _______ you ______ there/
You _______ to tell him the news. It will make him sad.
Many experts think pigs are ______ to train than dogs or cats.