It is no use _________ to persuade him ________ smoking because he has been addicted to it since he wasyoung.
Duncan, _______ NBA star, is one of _______ few football players who are very popular to many of Chinese fans.
Why is he not allowed to stay here? _______, it’s his home.
She is a diligent student, and all her spare time she has _____ staying in the library.
I still remember how many years ago_______ I last met her in the countryside.
His proposal is so idealistic that there are many______difficulties in putting it into practice.