Is

It is ____ for me to see him right now because I am in a meeting

I’m sorry to hear that your father is suffering from a serious ____

He is responsible ___ the traffic accident.

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

I think science is _______ than Japanese.

Are you worried____ your son who is at home alone?

There is no _________ in the world.

The product in her factory is better than _________

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

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