Life is like a long race________ we compete with others to go beyond ourselves.[ ]

If the wound ______ become infected, do not hesitate to call me.

If you_________ a new word while reading, please put it down in your notebook.

Do you believe that paper is made _____ wood.—Yes, I do. And you can see that books are made____ paper.

Are these your grandparents—No, ___________.