---- Putting on a happy face not only helps us make friends but also makes us feel better.----- .(2009.天津)
Today everyone arrived earlier than _______.
Just as the experts _______ it, this kind of material is not natural, but man-made.
¾ Are you waiting for a bus from Medical University? ¾ Yes. I arrived here at the bus stop ten minutes ago, but the bus _______.
¾ Who invented _______ cell phone? ¾ I don’t know. Maybe _______ European.
¾ Will you spare me a few minutes now? ¾ _______. But I’ll be free in half an hour.