It is no use _________ to persuade him ________ smoking because he has been addicted to it since he wasyoung.
Though we spent a lot, we think it _____ because we succeeded in the end.
The conference has been held to discuss the ________of global warming on people’s lives all over the world.
At the railway station,the mother waved goodbye to her daughter until the train was________.
________by a group of children,the old man was delighted.
Learning English means _________ memorizing a huge lot of words.It involves a large amount of reading as well.