The book seems to have been _____ from various books and articles.
I have many friends, ______ some are businessmen.
There was _____ time ______ Irap was one of the strongest countries in the world.
The old man,_______ abroad for 20 years, is on the way back to his mother land.
With his lips still _______ ,he couldn’t say a word.
The purpose of technology is to make it easier ,______ it more difficult.