--- Your brother isn’t at home. Where is he? --- He to Beijing. He for over 2 months. A. has gone; has left B. has been; has left C. has gone; has been away
--- Is there __________ in today’s newspaper?--- No. there isn’t.
--- Who teaches ________ music?--- Nobody. I teach ________.
Where’s my watch? I it.
—Are they on the desk?—
联合国的英文缩写是 。