It is _______ him to save the old man out of the big fire.
— Have you _______ read this story before? — Yes. I’ve _______ read it.
Have you noticed a boy a basketball into the building?
There is no light on--they be at home.
--You haven’t been to Guangzhou, have you?-- . How I wish to go there again.
I’m afraid the life we are used to a lot in a few years’ time.