Is

— Who’s that speaking? — This is Tom______________.

He is not a child ________.

I don’t know if the story is true, but I will try to _______ it.

---Excuse me, how much is the jacket? ---It’s 499 Yuan. ________.

The product in her factory is better than _________

There is no _________ in the world.

Are you worried____ your son who is at home alone?

I think science is _______ than Japanese.

It is impossible for us to hear everything ____ is going on in the world

He is responsible ___ the traffic accident.