When you go _________ the street, you must be careful.

Look! The lights in the classroom are still on.—Oh, I forgot ________.

end asked me to play ____ volleyball, but I’m tired and I don’t think I’ve got ____ energy.

global economy, a new drug for cancer, itis discovered, will create many economic possibilities around the world

It’s warm inside. You’d better take off your coat. Which of the following is correct in pronunciation for the underlined word in the sentence