Only when he had done it ______ that he had made a mistake.
| A．he then realized | B．did he realize | C．before | D．he realized |
After the meeting, I to write a report on our next term’s work.
| A．set about | B．set aside | C．set out | D．set off |
After winningwar in Iraq，the country fell intonew worries of economy．
| A．the; the | B．a; the | C．the; ／ | D．a; ／ |
As we know, in our Chinese history _____ was a time when industry was only a home business.
| A．it | B．there | C．that | D．what |
Only when it rains in summer_______ such beautiful rainbows here.
| A．could you see | B．you can see |
| C．you will see | D．can you see |
But as to the fine quality of the products, our price is very _______.
| A．high | B．fit | C．reasonable | D．small |