The prices of pirated (盗版) DVDs are lower because they take advantage of others’ _____ ideas without paying for the right to do so. [ ]

He has _______good knowledge of_____English language but not much of English history

You can’t ________ being punished if you break the law

With his attention _____ the blackboard, he didn’t notice me when I came in.[ ]

_______ of danger in the street at night, she had togo home with a friend_______ her.