University is ________ most worthwhile time of discovery and learning, and it is also ________ very enjoyable and valuable experience for every one of us.
| A．a; a | B．the; / |
| C．/; a | D．a; the |
Last month, part of Southeast Asia was struck by floods, fromeffects the people are still suffering.
| A．that | B．whose | C．those | D．what |
As soon as we wentthe ship, it left port.
aboard B. to aboard C. abroad D. board
We have every reason to believe that 2008 Beijing Olympic Games will besuccess.
| A．不填 ;a | B．the ;不填 | C．the ;a | D．a ;a |
He has worked the maths problem for nearly an hour but he simply can’t work it.
On ;atB. on ;out C. at ;up D. for ;out
Every means ______ tried but without much result.
| A．has been | B．have been | C．are | D．is |