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 |
Some of you may have finished unit one．________, you can go on to unit two．
A．If you may B．If you do C If not D．If so
Not until he left his home __________ to know how important the family was for him．
| A．did he begin | B．had he begun | C．he began | D．he had begun |
The reason __________ he explained is not __________ I expected．
| A．why; that | B．why; what | C．that ;what | D．that; that |
--- Do you enjoy your present job?
--- _________．I just do it for a living．
| A．Of course． | B．Not really | C．Not likely | D．Not a little |
Everyone in our class was working hard and doing what we could _______ a good university．
| A．enter | B．to enter | C．entering | D．entered |