The UN should﹍﹍the establishment of Iraqi government after the war, I think.
| A．take part in |
| B．play a leading role in |
| C．play a role among |
| D．play a important part for |
—Would you like to join us in playing the game?
—I’m sorry, but my homework ______ by now.
| A．hasn’t finished | B．hasn’t been finished | C．isn’t finished | D．won’t be finished |
Great as Newton was, many of his ideas _____today and are being modified by the work of scientists of our time.
| A．are to challenge | B．may be challenged | C．have been challenged | D．are challenged |
She tried hard to keep calm in face of the students, but the sweat on her forehead _____ her ____.
| A．gave; away | B．tuned; down | C．showed; out | D．shut; off |
Thomas Alva Edison didn’t “invent” the light bulb (灯泡), but rather he ______ a 50 –year –old idea, which is not well –known.
| A．improved upon | B．take down | C．put up | D．break away |
Dressed untidily and speaking in a strange way, Father must have ______ to the people present to be a silly old man.
| A．appeared | B．pretended | C．shown | D．thought |