I ______ the TV series The Legend of Zhenhuan when my mom made a phone call to me.
_______ , I lost heart in English learning, but my teacher often said to me, “Keep on working hard and you’ll succeed”.
Success in life doesn’t happen_____. It’s the result of devoting yourself to what you’ve set out to do.
Our school has strict rules. Almost no one can ________ using cell-phones in class .
My boss hates interruptions, when he is trying to work.
You can only be sure of _____ you have at present; you cannot be sure of something _____ you might get in the future.