It is no use _________ to persuade him ________ smoking because he has been addicted to it since he wasyoung.
_______ to say which one I should choose.
I think _______ right that you didn’t tell him the bad news.
_______ happened that I met one of my friends yesterday.
It _______ that she has lost interest in studying English.
________ is a pity that you forgot both her address and her telephone number.